Home / 3,901.92-5,385.36-2,330.12

Finding the Fourth Proportional to 3,901.92, 5,385.36 and 2,330.12

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Solution

The fourth proportional to 3,901.92, 5,385.36 and 2,330.12 is: 3,215.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,901.92 : 5,385.36 = 2,330.12 : x
  2. Step 2: Convert to fraction form
    3,901.92/5,385.36 = 2,330.12/x
  3. Step 3: Cross multiply
    3,901.92x = 5,385.36 × 2,330.12
  4. Step 4: Simplify right side
    3,901.92x = 12,548,535.04
  5. Step 5: Solve for x
    x = 12,548,535.04/3,901.92
  6. Step 6: Final answer
    x = 3,215.99

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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.