Home / 3,397.38-4,688.91-1,905.90

Finding the Fourth Proportional to 3,397.38, 4,688.91 and 1,905.90

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Solution

The fourth proportional to 3,397.38, 4,688.91 and 1,905.90 is: 2,630.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,397.38 : 4,688.91 = 1,905.90 : x
  2. Step 2: Convert to fraction form
    3,397.38/4,688.91 = 1,905.90/x
  3. Step 3: Cross multiply
    3,397.38x = 4,688.91 × 1,905.90
  4. Step 4: Simplify right side
    3,397.38x = 8,936,593.57
  5. Step 5: Solve for x
    x = 8,936,593.57/3,397.38
  6. Step 6: Final answer
    x = 2,630.44

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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.