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Finding the Fourth Proportional to 8,765.57, 13,132.53 and 4,812.54

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Solution

The fourth proportional to 8,765.57, 13,132.53 and 4,812.54 is: 7,210.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.57 : 13,132.53 = 4,812.54 : x
  2. Step 2: Convert to fraction form
    8,765.57/13,132.53 = 4,812.54/x
  3. Step 3: Cross multiply
    8,765.57x = 13,132.53 × 4,812.54
  4. Step 4: Simplify right side
    8,765.57x = 63,200,825.93
  5. Step 5: Solve for x
    x = 63,200,825.93/8,765.57
  6. Step 6: Final answer
    x = 7,210.13

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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.