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Finding the Fourth Proportional to 8,320.76, 12,470.76 and 5,351.30

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Solution

The fourth proportional to 8,320.76, 12,470.76 and 5,351.30 is: 8,020.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.76 : 12,470.76 = 5,351.30 : x
  2. Step 2: Convert to fraction form
    8,320.76/12,470.76 = 5,351.30/x
  3. Step 3: Cross multiply
    8,320.76x = 12,470.76 × 5,351.30
  4. Step 4: Simplify right side
    8,320.76x = 66,734,715.63
  5. Step 5: Solve for x
    x = 66,734,715.63/8,320.76
  6. Step 6: Final answer
    x = 8,020.27

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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.