Home / 2,618.68-3,613.50-1,439.74

Finding the Fourth Proportional to 2,618.68, 3,613.50 and 1,439.74

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Solution

The fourth proportional to 2,618.68, 3,613.50 and 1,439.74 is: 1,986.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.68 : 3,613.50 = 1,439.74 : x
  2. Step 2: Convert to fraction form
    2,618.68/3,613.50 = 1,439.74/x
  3. Step 3: Cross multiply
    2,618.68x = 3,613.50 × 1,439.74
  4. Step 4: Simplify right side
    2,618.68x = 5,202,500.49
  5. Step 5: Solve for x
    x = 5,202,500.49/2,618.68
  6. Step 6: Final answer
    x = 1,986.69

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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.