Home / 1,449.89-2,000.25-1,077.78

Finding the Fourth Proportional to 1,449.89, 2,000.25 and 1,077.78

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Solution

The fourth proportional to 1,449.89, 2,000.25 and 1,077.78 is: 1,486.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.89 : 2,000.25 = 1,077.78 : x
  2. Step 2: Convert to fraction form
    1,449.89/2,000.25 = 1,077.78/x
  3. Step 3: Cross multiply
    1,449.89x = 2,000.25 × 1,077.78
  4. Step 4: Simplify right side
    1,449.89x = 2,155,829.45
  5. Step 5: Solve for x
    x = 2,155,829.45/1,449.89
  6. Step 6: Final answer
    x = 1,486.90

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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.