Home / 2,618.14-3,613-1,439.18

Finding the Fourth Proportional to 2,618.14, 3,613 and 1,439.18

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Solution

The fourth proportional to 2,618.14, 3,613 and 1,439.18 is: 1,986.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.14 : 3,613 = 1,439.18 : x
  2. Step 2: Convert to fraction form
    2,618.14/3,613 = 1,439.18/x
  3. Step 3: Cross multiply
    2,618.14x = 3,613 × 1,439.18
  4. Step 4: Simplify right side
    2,618.14x = 5,199,757.34
  5. Step 5: Solve for x
    x = 5,199,757.34/2,618.14
  6. Step 6: Final answer
    x = 1,986.05

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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.