Home / 2,618.85-3,614-1,439.90

Finding the Fourth Proportional to 2,618.85, 3,614 and 1,439.90

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Solution

The fourth proportional to 2,618.85, 3,614 and 1,439.90 is: 1,987.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.85 : 3,614 = 1,439.90 : x
  2. Step 2: Convert to fraction form
    2,618.85/3,614 = 1,439.90/x
  3. Step 3: Cross multiply
    2,618.85x = 3,614 × 1,439.90
  4. Step 4: Simplify right side
    2,618.85x = 5,203,798.60
  5. Step 5: Solve for x
    x = 5,203,798.60/2,618.85
  6. Step 6: Final answer
    x = 1,987.05

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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.