Home / 3,102.12-4,280.85-1,757.53

Finding the Fourth Proportional to 3,102.12, 4,280.85 and 1,757.53

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Solution

The fourth proportional to 3,102.12, 4,280.85 and 1,757.53 is: 2,425.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.12 : 4,280.85 = 1,757.53 : x
  2. Step 2: Convert to fraction form
    3,102.12/4,280.85 = 1,757.53/x
  3. Step 3: Cross multiply
    3,102.12x = 4,280.85 × 1,757.53
  4. Step 4: Simplify right side
    3,102.12x = 7,523,722.30
  5. Step 5: Solve for x
    x = 7,523,722.30/3,102.12
  6. Step 6: Final answer
    x = 2,425.35

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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.