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Finding the Fourth Proportional to 1,868.74, 2,560.19 and 1,798.68

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Solution

The fourth proportional to 1,868.74, 2,560.19 and 1,798.68 is: 2,464.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.74 : 2,560.19 = 1,798.68 : x
  2. Step 2: Convert to fraction form
    1,868.74/2,560.19 = 1,798.68/x
  3. Step 3: Cross multiply
    1,868.74x = 2,560.19 × 1,798.68
  4. Step 4: Simplify right side
    1,868.74x = 4,604,958.87
  5. Step 5: Solve for x
    x = 4,604,958.87/1,868.74
  6. Step 6: Final answer
    x = 2,464.20

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.