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Finding the Fourth Proportional to 8,862.80, 13,290.84 and 2,620.88

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Solution

The fourth proportional to 8,862.80, 13,290.84 and 2,620.88 is: 3,930.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,862.80 : 13,290.84 = 2,620.88 : x
  2. Step 2: Convert to fraction form
    8,862.80/13,290.84 = 2,620.88/x
  3. Step 3: Cross multiply
    8,862.80x = 13,290.84 × 2,620.88
  4. Step 4: Simplify right side
    8,862.80x = 34,833,696.74
  5. Step 5: Solve for x
    x = 34,833,696.74/8,862.80
  6. Step 6: Final answer
    x = 3,930.33

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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.