Home / 3,102.04-4,280.83-1,685.74

Finding the Fourth Proportional to 3,102.04, 4,280.83 and 1,685.74

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Solution

The fourth proportional to 3,102.04, 4,280.83 and 1,685.74 is: 2,326.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.04 : 4,280.83 = 1,685.74 : x
  2. Step 2: Convert to fraction form
    3,102.04/4,280.83 = 1,685.74/x
  3. Step 3: Cross multiply
    3,102.04x = 4,280.83 × 1,685.74
  4. Step 4: Simplify right side
    3,102.04x = 7,216,340.75
  5. Step 5: Solve for x
    x = 7,216,340.75/3,102.04
  6. Step 6: Final answer
    x = 2,326.32

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.