Home / 9,177.12-12,663.36-5,641.92

Finding the Fourth Proportional to 9,177.12, 12,663.36 and 5,641.92

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Solution

The fourth proportional to 9,177.12, 12,663.36 and 5,641.92 is: 7,785.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,177.12 : 12,663.36 = 5,641.92 : x
  2. Step 2: Convert to fraction form
    9,177.12/12,663.36 = 5,641.92/x
  3. Step 3: Cross multiply
    9,177.12x = 12,663.36 × 5,641.92
  4. Step 4: Simplify right side
    9,177.12x = 71,445,664.05
  5. Step 5: Solve for x
    x = 71,445,664.05/9,177.12
  6. Step 6: Final answer
    x = 7,785.19

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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.