Home / 8,286.13-12,428.85-5,647.04

Finding the Fourth Proportional to 8,286.13, 12,428.85 and 5,647.04

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Solution

The fourth proportional to 8,286.13, 12,428.85 and 5,647.04 is: 8,470.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.13 : 12,428.85 = 5,647.04 : x
  2. Step 2: Convert to fraction form
    8,286.13/12,428.85 = 5,647.04/x
  3. Step 3: Cross multiply
    8,286.13x = 12,428.85 × 5,647.04
  4. Step 4: Simplify right side
    8,286.13x = 70,186,213.10
  5. Step 5: Solve for x
    x = 70,186,213.10/8,286.13
  6. Step 6: Final answer
    x = 8,470.32

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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.