Home / 4,170.55-6,255.12-1,397.21

Finding the Fourth Proportional to 4,170.55, 6,255.12 and 1,397.21

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Solution

The fourth proportional to 4,170.55, 6,255.12 and 1,397.21 is: 2,095.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,170.55 : 6,255.12 = 1,397.21 : x
  2. Step 2: Convert to fraction form
    4,170.55/6,255.12 = 1,397.21/x
  3. Step 3: Cross multiply
    4,170.55x = 6,255.12 × 1,397.21
  4. Step 4: Simplify right side
    4,170.55x = 8,739,734.16
  5. Step 5: Solve for x
    x = 8,739,734.16/4,170.55
  6. Step 6: Final answer
    x = 2,095.58

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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.