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Finding the Fourth Proportional to 6,751.38, 9,309.18 and 5,687.58

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Solution

The fourth proportional to 6,751.38, 9,309.18 and 5,687.58 is: 7,842.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,751.38 : 9,309.18 = 5,687.58 : x
  2. Step 2: Convert to fraction form
    6,751.38/9,309.18 = 5,687.58/x
  3. Step 3: Cross multiply
    6,751.38x = 9,309.18 × 5,687.58
  4. Step 4: Simplify right side
    6,751.38x = 52,946,705.98
  5. Step 5: Solve for x
    x = 52,946,705.98/6,751.38
  6. Step 6: Final answer
    x = 7,842.35

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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.