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Finding the Fourth Proportional to 2,698.74, 3,724.25 and 1,520.19

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Solution

The fourth proportional to 2,698.74, 3,724.25 and 1,520.19 is: 2,097.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,698.74 : 3,724.25 = 1,520.19 : x
  2. Step 2: Convert to fraction form
    2,698.74/3,724.25 = 1,520.19/x
  3. Step 3: Cross multiply
    2,698.74x = 3,724.25 × 1,520.19
  4. Step 4: Simplify right side
    2,698.74x = 5,661,560.01
  5. Step 5: Solve for x
    x = 5,661,560.01/2,698.74
  6. Step 6: Final answer
    x = 2,097.85

Related Problems

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Half scale
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Double scale
Find fourth proportional to 2,699.74, 3,725.62 and 1,521.19
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.