Home / 2,170.15-3,248.53-1,387.55

Finding the Fourth Proportional to 2,170.15, 3,248.53 and 1,387.55

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Solution

The fourth proportional to 2,170.15, 3,248.53 and 1,387.55 is: 2,077.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.15 : 3,248.53 = 1,387.55 : x
  2. Step 2: Convert to fraction form
    2,170.15/3,248.53 = 1,387.55/x
  3. Step 3: Cross multiply
    2,170.15x = 3,248.53 × 1,387.55
  4. Step 4: Simplify right side
    2,170.15x = 4,507,497.80
  5. Step 5: Solve for x
    x = 4,507,497.80/2,170.15
  6. Step 6: Final answer
    x = 2,077.04

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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.