Home / 9,780.56-14,651.40-5,387.12

Finding the Fourth Proportional to 9,780.56, 14,651.40 and 5,387.12

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Solution

The fourth proportional to 9,780.56, 14,651.40 and 5,387.12 is: 8,069.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,780.56 : 14,651.40 = 5,387.12 : x
  2. Step 2: Convert to fraction form
    9,780.56/14,651.40 = 5,387.12/x
  3. Step 3: Cross multiply
    9,780.56x = 14,651.40 × 5,387.12
  4. Step 4: Simplify right side
    9,780.56x = 78,928,849.97
  5. Step 5: Solve for x
    x = 78,928,849.97/9,780.56
  6. Step 6: Final answer
    x = 8,069.97

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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.