Home / 7,165.08-9,887.88-4,139.97

Finding the Fourth Proportional to 7,165.08, 9,887.88 and 4,139.97

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Solution

The fourth proportional to 7,165.08, 9,887.88 and 4,139.97 is: 5,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,165.08 : 9,887.88 = 4,139.97 : x
  2. Step 2: Convert to fraction form
    7,165.08/9,887.88 = 4,139.97/x
  3. Step 3: Cross multiply
    7,165.08x = 9,887.88 × 4,139.97
  4. Step 4: Simplify right side
    7,165.08x = 40,935,526.56
  5. Step 5: Solve for x
    x = 40,935,526.56/7,165.08
  6. Step 6: Final answer
    x = 5,713.20

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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.