Home / 8,981.20-12,390.48-5,253.04

Finding the Fourth Proportional to 8,981.20, 12,390.48 and 5,253.04

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Solution

The fourth proportional to 8,981.20, 12,390.48 and 5,253.04 is: 7,247.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.20 : 12,390.48 = 5,253.04 : x
  2. Step 2: Convert to fraction form
    8,981.20/12,390.48 = 5,253.04/x
  3. Step 3: Cross multiply
    8,981.20x = 12,390.48 × 5,253.04
  4. Step 4: Simplify right side
    8,981.20x = 65,087,687.06
  5. Step 5: Solve for x
    x = 65,087,687.06/8,981.20
  6. Step 6: Final answer
    x = 7,247.10

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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.