Home / 8,780.01-13,158.52-7,666.62

Finding the Fourth Proportional to 8,780.01, 13,158.52 and 7,666.62

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Solution

The fourth proportional to 8,780.01, 13,158.52 and 7,666.62 is: 11,489.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.01 : 13,158.52 = 7,666.62 : x
  2. Step 2: Convert to fraction form
    8,780.01/13,158.52 = 7,666.62/x
  3. Step 3: Cross multiply
    8,780.01x = 13,158.52 × 7,666.62
  4. Step 4: Simplify right side
    8,780.01x = 100,881,304.09
  5. Step 5: Solve for x
    x = 100,881,304.09/8,780.01
  6. Step 6: Final answer
    x = 11,489.89

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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.