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Finding the Fourth Proportional to 8,799.60, 13,199.40 and 2,642.80

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Solution

The fourth proportional to 8,799.60, 13,199.40 and 2,642.80 is: 3,964.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,799.60 : 13,199.40 = 2,642.80 : x
  2. Step 2: Convert to fraction form
    8,799.60/13,199.40 = 2,642.80/x
  3. Step 3: Cross multiply
    8,799.60x = 13,199.40 × 2,642.80
  4. Step 4: Simplify right side
    8,799.60x = 34,883,374.32
  5. Step 5: Solve for x
    x = 34,883,374.32/8,799.60
  6. Step 6: Final answer
    x = 3,964.20

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Similar ratio
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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.