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Finding the Fourth Proportional to 6,751.52, 9,311.28 and 4,392.80

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Solution

The fourth proportional to 6,751.52, 9,311.28 and 4,392.80 is: 6,058.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,751.52 : 9,311.28 = 4,392.80 : x
  2. Step 2: Convert to fraction form
    6,751.52/9,311.28 = 4,392.80/x
  3. Step 3: Cross multiply
    6,751.52x = 9,311.28 × 4,392.80
  4. Step 4: Simplify right side
    6,751.52x = 40,902,590.78
  5. Step 5: Solve for x
    x = 40,902,590.78/6,751.52
  6. Step 6: Final answer
    x = 6,058.28

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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.