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Finding the Fourth Proportional to 5,923.60, 8,890.80 and 5,102.80

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Solution

The fourth proportional to 5,923.60, 8,890.80 and 5,102.80 is: 7,658.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,923.60 : 8,890.80 = 5,102.80 : x
  2. Step 2: Convert to fraction form
    5,923.60/8,890.80 = 5,102.80/x
  3. Step 3: Cross multiply
    5,923.60x = 8,890.80 × 5,102.80
  4. Step 4: Simplify right side
    5,923.60x = 45,367,974.24
  5. Step 5: Solve for x
    x = 45,367,974.24/5,923.60
  6. Step 6: Final answer
    x = 7,658.85

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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.