Home / 8,902.40-12,286.80-5,366.16

Finding the Fourth Proportional to 8,902.40, 12,286.80 and 5,366.16

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Solution

The fourth proportional to 8,902.40, 12,286.80 and 5,366.16 is: 7,406.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,902.40 : 12,286.80 = 5,366.16 : x
  2. Step 2: Convert to fraction form
    8,902.40/12,286.80 = 5,366.16/x
  3. Step 3: Cross multiply
    8,902.40x = 12,286.80 × 5,366.16
  4. Step 4: Simplify right side
    8,902.40x = 65,932,934.69
  5. Step 5: Solve for x
    x = 65,932,934.69/8,902.40
  6. Step 6: Final answer
    x = 7,406.20

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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.