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Finding the Fourth Proportional to 5,470.38, 7,549.12 and 2,986.38

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Solution

The fourth proportional to 5,470.38, 7,549.12 and 2,986.38 is: 4,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,470.38 : 7,549.12 = 2,986.38 : x
  2. Step 2: Convert to fraction form
    5,470.38/7,549.12 = 2,986.38/x
  3. Step 3: Cross multiply
    5,470.38x = 7,549.12 × 2,986.38
  4. Step 4: Simplify right side
    5,470.38x = 22,544,540.99
  5. Step 5: Solve for x
    x = 22,544,540.99/5,470.38
  6. Step 6: Final answer
    x = 4,121.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.