Home / 8,190.68-11,307.42-5,515.95

Finding the Fourth Proportional to 8,190.68, 11,307.42 and 5,515.95

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Solution

The fourth proportional to 8,190.68, 11,307.42 and 5,515.95 is: 7,614.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.68 : 11,307.42 = 5,515.95 : x
  2. Step 2: Convert to fraction form
    8,190.68/11,307.42 = 5,515.95/x
  3. Step 3: Cross multiply
    8,190.68x = 11,307.42 × 5,515.95
  4. Step 4: Simplify right side
    8,190.68x = 62,371,163.35
  5. Step 5: Solve for x
    x = 62,371,163.35/8,190.68
  6. Step 6: Final answer
    x = 7,614.90

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Double scale
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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.