Home / 9,331.76-12,877.32-5,139.68

Finding the Fourth Proportional to 9,331.76, 12,877.32 and 5,139.68

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Solution

The fourth proportional to 9,331.76, 12,877.32 and 5,139.68 is: 7,092.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,331.76 : 12,877.32 = 5,139.68 : x
  2. Step 2: Convert to fraction form
    9,331.76/12,877.32 = 5,139.68/x
  3. Step 3: Cross multiply
    9,331.76x = 12,877.32 × 5,139.68
  4. Step 4: Simplify right side
    9,331.76x = 66,185,304.06
  5. Step 5: Solve for x
    x = 66,185,304.06/9,331.76
  6. Step 6: Final answer
    x = 7,092.48

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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.