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Finding the Fourth Proportional to 8,828.90, 13,239.07 and 5,132.20

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Solution

The fourth proportional to 8,828.90, 13,239.07 and 5,132.20 is: 7,695.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,828.90 : 13,239.07 = 5,132.20 : x
  2. Step 2: Convert to fraction form
    8,828.90/13,239.07 = 5,132.20/x
  3. Step 3: Cross multiply
    8,828.90x = 13,239.07 × 5,132.20
  4. Step 4: Simplify right side
    8,828.90x = 67,945,555.05
  5. Step 5: Solve for x
    x = 67,945,555.05/8,828.90
  6. Step 6: Final answer
    x = 7,695.81

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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.