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Finding the Fourth Proportional to 8,877.66, 12,254.68 and 5,340.20

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Solution

The fourth proportional to 8,877.66, 12,254.68 and 5,340.20 is: 7,371.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,877.66 : 12,254.68 = 5,340.20 : x
  2. Step 2: Convert to fraction form
    8,877.66/12,254.68 = 5,340.20/x
  3. Step 3: Cross multiply
    8,877.66x = 12,254.68 × 5,340.20
  4. Step 4: Simplify right side
    8,877.66x = 65,442,367.51
  5. Step 5: Solve for x
    x = 65,442,367.51/8,877.66
  6. Step 6: Final answer
    x = 7,371.58

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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.