Home / 9,660.57-13,331.82-5,411.78

Finding the Fourth Proportional to 9,660.57, 13,331.82 and 5,411.78

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Solution

The fourth proportional to 9,660.57, 13,331.82 and 5,411.78 is: 7,468.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,660.57 : 13,331.82 = 5,411.78 : x
  2. Step 2: Convert to fraction form
    9,660.57/13,331.82 = 5,411.78/x
  3. Step 3: Cross multiply
    9,660.57x = 13,331.82 × 5,411.78
  4. Step 4: Simplify right side
    9,660.57x = 72,148,810.18
  5. Step 5: Solve for x
    x = 72,148,810.18/9,660.57
  6. Step 6: Final answer
    x = 7,468.38

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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.