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Finding the Fourth Proportional to 5,757.66, 7,946.28 and 3,240.72

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Solution

The fourth proportional to 5,757.66, 7,946.28 and 3,240.72 is: 4,472.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,757.66 : 7,946.28 = 3,240.72 : x
  2. Step 2: Convert to fraction form
    5,757.66/7,946.28 = 3,240.72/x
  3. Step 3: Cross multiply
    5,757.66x = 7,946.28 × 3,240.72
  4. Step 4: Simplify right side
    5,757.66x = 25,751,668.52
  5. Step 5: Solve for x
    x = 25,751,668.52/5,757.66
  6. Step 6: Final answer
    x = 4,472.59

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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.