Home / 2,618.47-3,613.53-1,439.65

Finding the Fourth Proportional to 2,618.47, 3,613.53 and 1,439.65

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Solution

The fourth proportional to 2,618.47, 3,613.53 and 1,439.65 is: 1,986.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.47 : 3,613.53 = 1,439.65 : x
  2. Step 2: Convert to fraction form
    2,618.47/3,613.53 = 1,439.65/x
  3. Step 3: Cross multiply
    2,618.47x = 3,613.53 × 1,439.65
  4. Step 4: Simplify right side
    2,618.47x = 5,202,218.46
  5. Step 5: Solve for x
    x = 5,202,218.46/2,618.47
  6. Step 6: Final answer
    x = 1,986.74

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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.