Home / 9,331.45-12,877.41-5,139.70

Finding the Fourth Proportional to 9,331.45, 12,877.41 and 5,139.70

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Solution

The fourth proportional to 9,331.45, 12,877.41 and 5,139.70 is: 7,092.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,331.45 : 12,877.41 = 5,139.70 : x
  2. Step 2: Convert to fraction form
    9,331.45/12,877.41 = 5,139.70/x
  3. Step 3: Cross multiply
    9,331.45x = 12,877.41 × 5,139.70
  4. Step 4: Simplify right side
    9,331.45x = 66,186,040.33
  5. Step 5: Solve for x
    x = 66,186,040.33/9,331.45
  6. Step 6: Final answer
    x = 7,092.79

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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.