Home / 8,812.11-12,153.92-5,270.79

Finding the Fourth Proportional to 8,812.11, 12,153.92 and 5,270.79

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Solution

The fourth proportional to 8,812.11, 12,153.92 and 5,270.79 is: 7,269.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.11 : 12,153.92 = 5,270.79 : x
  2. Step 2: Convert to fraction form
    8,812.11/12,153.92 = 5,270.79/x
  3. Step 3: Cross multiply
    8,812.11x = 12,153.92 × 5,270.79
  4. Step 4: Simplify right side
    8,812.11x = 64,060,733.64
  5. Step 5: Solve for x
    x = 64,060,733.64/8,812.11
  6. Step 6: Final answer
    x = 7,269.62

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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.