Home / 9,331.14-12,876.96-5,139.39

Finding the Fourth Proportional to 9,331.14, 12,876.96 and 5,139.39

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Solution

The fourth proportional to 9,331.14, 12,876.96 and 5,139.39 is: 7,092.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,331.14 : 12,876.96 = 5,139.39 : x
  2. Step 2: Convert to fraction form
    9,331.14/12,876.96 = 5,139.39/x
  3. Step 3: Cross multiply
    9,331.14x = 12,876.96 × 5,139.39
  4. Step 4: Simplify right side
    9,331.14x = 66,179,719.45
  5. Step 5: Solve for x
    x = 66,179,719.45/9,331.14
  6. Step 6: Final answer
    x = 7,092.35

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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.