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Finding the Fourth Proportional to 5,738.60, 8,607.90 and 5,112.20

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Solution

The fourth proportional to 5,738.60, 8,607.90 and 5,112.20 is: 7,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,738.60 : 8,607.90 = 5,112.20 : x
  2. Step 2: Convert to fraction form
    5,738.60/8,607.90 = 5,112.20/x
  3. Step 3: Cross multiply
    5,738.60x = 8,607.90 × 5,112.20
  4. Step 4: Simplify right side
    5,738.60x = 44,005,306.38
  5. Step 5: Solve for x
    x = 44,005,306.38/5,738.60
  6. Step 6: Final answer
    x = 7,668.30

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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.