Home / 2,618.12-3,613.01-1,439.19

Finding the Fourth Proportional to 2,618.12, 3,613.01 and 1,439.19

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Solution

The fourth proportional to 2,618.12, 3,613.01 and 1,439.19 is: 1,986.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.12 : 3,613.01 = 1,439.19 : x
  2. Step 2: Convert to fraction form
    2,618.12/3,613.01 = 1,439.19/x
  3. Step 3: Cross multiply
    2,618.12x = 3,613.01 × 1,439.19
  4. Step 4: Simplify right side
    2,618.12x = 5,199,800.67
  5. Step 5: Solve for x
    x = 5,199,800.67/2,618.12
  6. Step 6: Final answer
    x = 1,986.08

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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.