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Finding the Fourth Proportional to 8,875.52, 13,314.56 and 2,720

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Solution

The fourth proportional to 8,875.52, 13,314.56 and 2,720 is: 4,080.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,875.52 : 13,314.56 = 2,720 : x
  2. Step 2: Convert to fraction form
    8,875.52/13,314.56 = 2,720/x
  3. Step 3: Cross multiply
    8,875.52x = 13,314.56 × 2,720
  4. Step 4: Simplify right side
    8,875.52x = 36,215,603.20
  5. Step 5: Solve for x
    x = 36,215,603.20/8,875.52
  6. Step 6: Final answer
    x = 4,080.39

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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.