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Finding the Fourth Proportional to 6,696.12, 9,240.13 and 3,711.90

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Solution

The fourth proportional to 6,696.12, 9,240.13 and 3,711.90 is: 5,122.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,696.12 : 9,240.13 = 3,711.90 : x
  2. Step 2: Convert to fraction form
    6,696.12/9,240.13 = 3,711.90/x
  3. Step 3: Cross multiply
    6,696.12x = 9,240.13 × 3,711.90
  4. Step 4: Simplify right side
    6,696.12x = 34,298,438.55
  5. Step 5: Solve for x
    x = 34,298,438.55/6,696.12
  6. Step 6: Final answer
    x = 5,122.14

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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.