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Finding the Fourth Proportional to 5,758.85, 7,946.63 and 3,240.90

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Solution

The fourth proportional to 5,758.85, 7,946.63 and 3,240.90 is: 4,472.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,758.85 : 7,946.63 = 3,240.90 : x
  2. Step 2: Convert to fraction form
    5,758.85/7,946.63 = 3,240.90/x
  3. Step 3: Cross multiply
    5,758.85x = 7,946.63 × 3,240.90
  4. Step 4: Simplify right side
    5,758.85x = 25,754,233.17
  5. Step 5: Solve for x
    x = 25,754,233.17/5,758.85
  6. Step 6: Final answer
    x = 4,472.11

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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.