Home / 2,331.49-3,217.17-1,387.30

Finding the Fourth Proportional to 2,331.49, 3,217.17 and 1,387.30

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Solution

The fourth proportional to 2,331.49, 3,217.17 and 1,387.30 is: 1,914.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,331.49 : 3,217.17 = 1,387.30 : x
  2. Step 2: Convert to fraction form
    2,331.49/3,217.17 = 1,387.30/x
  3. Step 3: Cross multiply
    2,331.49x = 3,217.17 × 1,387.30
  4. Step 4: Simplify right side
    2,331.49x = 4,463,179.94
  5. Step 5: Solve for x
    x = 4,463,179.94/2,331.49
  6. Step 6: Final answer
    x = 1,914.30

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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.