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Finding the Fourth Proportional to 8,881.57, 13,317.72 and 2,640.73

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Solution

The fourth proportional to 8,881.57, 13,317.72 and 2,640.73 is: 3,959.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,881.57 : 13,317.72 = 2,640.73 : x
  2. Step 2: Convert to fraction form
    8,881.57/13,317.72 = 2,640.73/x
  3. Step 3: Cross multiply
    8,881.57x = 13,317.72 × 2,640.73
  4. Step 4: Simplify right side
    8,881.57x = 35,168,502.74
  5. Step 5: Solve for x
    x = 35,168,502.74/8,881.57
  6. Step 6: Final answer
    x = 3,959.72

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1.5x scale

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.