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Finding the Fourth Proportional to 8,752.71, 12,078.96 and 5,397.75

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Solution

The fourth proportional to 8,752.71, 12,078.96 and 5,397.75 is: 7,449.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,752.71 : 12,078.96 = 5,397.75 : x
  2. Step 2: Convert to fraction form
    8,752.71/12,078.96 = 5,397.75/x
  3. Step 3: Cross multiply
    8,752.71x = 12,078.96 × 5,397.75
  4. Step 4: Simplify right side
    8,752.71x = 65,199,206.34
  5. Step 5: Solve for x
    x = 65,199,206.34/8,752.71
  6. Step 6: Final answer
    x = 7,449.03

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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.