Home / 4,160.80-6,241.28-1,387.48

Finding the Fourth Proportional to 4,160.80, 6,241.28 and 1,387.48

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Solution

The fourth proportional to 4,160.80, 6,241.28 and 1,387.48 is: 2,081.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,160.80 : 6,241.28 = 1,387.48 : x
  2. Step 2: Convert to fraction form
    4,160.80/6,241.28 = 1,387.48/x
  3. Step 3: Cross multiply
    4,160.80x = 6,241.28 × 1,387.48
  4. Step 4: Simplify right side
    4,160.80x = 8,659,651.17
  5. Step 5: Solve for x
    x = 8,659,651.17/4,160.80
  6. Step 6: Final answer
    x = 2,081.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.