Home / 8,881.20-13,298.40-7,117.92

Finding the Fourth Proportional to 8,881.20, 13,298.40 and 7,117.92

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Solution

The fourth proportional to 8,881.20, 13,298.40 and 7,117.92 is: 10,658.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,881.20 : 13,298.40 = 7,117.92 : x
  2. Step 2: Convert to fraction form
    8,881.20/13,298.40 = 7,117.92/x
  3. Step 3: Cross multiply
    8,881.20x = 13,298.40 × 7,117.92
  4. Step 4: Simplify right side
    8,881.20x = 94,656,947.33
  5. Step 5: Solve for x
    x = 94,656,947.33/8,881.20
  6. Step 6: Final answer
    x = 10,658.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.