Home / 2,613.11-3,916.40-1,314.95

Finding the Fourth Proportional to 2,613.11, 3,916.40 and 1,314.95

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Solution

The fourth proportional to 2,613.11, 3,916.40 and 1,314.95 is: 1,970.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,613.11 : 3,916.40 = 1,314.95 : x
  2. Step 2: Convert to fraction form
    2,613.11/3,916.40 = 1,314.95/x
  3. Step 3: Cross multiply
    2,613.11x = 3,916.40 × 1,314.95
  4. Step 4: Simplify right side
    2,613.11x = 5,149,844.02
  5. Step 5: Solve for x
    x = 5,149,844.02/2,613.11
  6. Step 6: Final answer
    x = 1,970.78

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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.