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Finding the Fourth Proportional to 5,876.80, 8,815.20 and 4,494.40

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Solution

The fourth proportional to 5,876.80, 8,815.20 and 4,494.40 is: 6,741.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,876.80 : 8,815.20 = 4,494.40 : x
  2. Step 2: Convert to fraction form
    5,876.80/8,815.20 = 4,494.40/x
  3. Step 3: Cross multiply
    5,876.80x = 8,815.20 × 4,494.40
  4. Step 4: Simplify right side
    5,876.80x = 39,619,034.88
  5. Step 5: Solve for x
    x = 39,619,034.88/5,876.80
  6. Step 6: Final answer
    x = 6,741.60

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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.