Home / 2,618.90-3,614.12-1,439.96

Finding the Fourth Proportional to 2,618.90, 3,614.12 and 1,439.96

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Solution

The fourth proportional to 2,618.90, 3,614.12 and 1,439.96 is: 1,987.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.90 : 3,614.12 = 1,439.96 : x
  2. Step 2: Convert to fraction form
    2,618.90/3,614.12 = 1,439.96/x
  3. Step 3: Cross multiply
    2,618.90x = 3,614.12 × 1,439.96
  4. Step 4: Simplify right side
    2,618.90x = 5,204,188.24
  5. Step 5: Solve for x
    x = 5,204,188.24/2,618.90
  6. Step 6: Final answer
    x = 1,987.17

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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.