Home / 6,387.12-9,580.68-5,518.80

Finding the Fourth Proportional to 6,387.12, 9,580.68 and 5,518.80

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Solution

The fourth proportional to 6,387.12, 9,580.68 and 5,518.80 is: 8,278.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.12 : 9,580.68 = 5,518.80 : x
  2. Step 2: Convert to fraction form
    6,387.12/9,580.68 = 5,518.80/x
  3. Step 3: Cross multiply
    6,387.12x = 9,580.68 × 5,518.80
  4. Step 4: Simplify right side
    6,387.12x = 52,873,856.78
  5. Step 5: Solve for x
    x = 52,873,856.78/6,387.12
  6. Step 6: Final answer
    x = 8,278.20

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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.