Home / 3,690.11-5,535.15-916.76

Finding the Fourth Proportional to 3,690.11, 5,535.15 and 916.76

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Solution

The fourth proportional to 3,690.11, 5,535.15 and 916.76 is: 1,375.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.11 : 5,535.15 = 916.76 : x
  2. Step 2: Convert to fraction form
    3,690.11/5,535.15 = 916.76/x
  3. Step 3: Cross multiply
    3,690.11x = 5,535.15 × 916.76
  4. Step 4: Simplify right side
    3,690.11x = 5,074,401.70
  5. Step 5: Solve for x
    x = 5,074,401.70/3,690.11
  6. Step 6: Final answer
    x = 1,375.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.