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Finding the Fourth Proportional to 8,878.29, 12,254.18 and 5,340.81

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Solution

The fourth proportional to 8,878.29, 12,254.18 and 5,340.81 is: 7,371.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.29 : 12,254.18 = 5,340.81 : x
  2. Step 2: Convert to fraction form
    8,878.29/12,254.18 = 5,340.81/x
  3. Step 3: Cross multiply
    8,878.29x = 12,254.18 × 5,340.81
  4. Step 4: Simplify right side
    8,878.29x = 65,447,247.09
  5. Step 5: Solve for x
    x = 65,447,247.09/8,878.29
  6. Step 6: Final answer
    x = 7,371.61

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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.