Home / 3,151.42-4,346.13-1,972.60

Finding the Fourth Proportional to 3,151.42, 4,346.13 and 1,972.60

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Solution

The fourth proportional to 3,151.42, 4,346.13 and 1,972.60 is: 2,720.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.42 : 4,346.13 = 1,972.60 : x
  2. Step 2: Convert to fraction form
    3,151.42/4,346.13 = 1,972.60/x
  3. Step 3: Cross multiply
    3,151.42x = 4,346.13 × 1,972.60
  4. Step 4: Simplify right side
    3,151.42x = 8,573,176.04
  5. Step 5: Solve for x
    x = 8,573,176.04/3,151.42
  6. Step 6: Final answer
    x = 2,720.42

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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.