Home / 9,278.40-13,847.20-8,522.56

Finding the Fourth Proportional to 9,278.40, 13,847.20 and 8,522.56

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Solution

The fourth proportional to 9,278.40, 13,847.20 and 8,522.56 is: 12,719.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,278.40 : 13,847.20 = 8,522.56 : x
  2. Step 2: Convert to fraction form
    9,278.40/13,847.20 = 8,522.56/x
  3. Step 3: Cross multiply
    9,278.40x = 13,847.20 × 8,522.56
  4. Step 4: Simplify right side
    9,278.40x = 118,013,592.83
  5. Step 5: Solve for x
    x = 118,013,592.83/9,278.40
  6. Step 6: Final answer
    x = 12,719.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.