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Finding the Fourth Proportional to 5,723.60, 8,590.80 and 4,902.80

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Solution

The fourth proportional to 5,723.60, 8,590.80 and 4,902.80 is: 7,358.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,723.60 : 8,590.80 = 4,902.80 : x
  2. Step 2: Convert to fraction form
    5,723.60/8,590.80 = 4,902.80/x
  3. Step 3: Cross multiply
    5,723.60x = 8,590.80 × 4,902.80
  4. Step 4: Simplify right side
    5,723.60x = 42,118,974.24
  5. Step 5: Solve for x
    x = 42,118,974.24/5,723.60
  6. Step 6: Final answer
    x = 7,358.83

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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.