Home / 9,331.56-12,877.62-5,139.88

Finding the Fourth Proportional to 9,331.56, 12,877.62 and 5,139.88

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Solution

The fourth proportional to 9,331.56, 12,877.62 and 5,139.88 is: 7,093.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,331.56 : 12,877.62 = 5,139.88 : x
  2. Step 2: Convert to fraction form
    9,331.56/12,877.62 = 5,139.88/x
  3. Step 3: Cross multiply
    9,331.56x = 12,877.62 × 5,139.88
  4. Step 4: Simplify right side
    9,331.56x = 66,189,421.49
  5. Step 5: Solve for x
    x = 66,189,421.49/9,331.56
  6. Step 6: Final answer
    x = 7,093.07

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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.