Home / 9,117.38-12,581.79-5,340.08

Finding the Fourth Proportional to 9,117.38, 12,581.79 and 5,340.08

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Solution

The fourth proportional to 9,117.38, 12,581.79 and 5,340.08 is: 7,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,117.38 : 12,581.79 = 5,340.08 : x
  2. Step 2: Convert to fraction form
    9,117.38/12,581.79 = 5,340.08/x
  3. Step 3: Cross multiply
    9,117.38x = 12,581.79 × 5,340.08
  4. Step 4: Simplify right side
    9,117.38x = 67,187,765.14
  5. Step 5: Solve for x
    x = 67,187,765.14/9,117.38
  6. Step 6: Final answer
    x = 7,369.20

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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.