Home / 3,151.28-4,346.52-2,156.60

Finding the Fourth Proportional to 3,151.28, 4,346.52 and 2,156.60

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Solution

The fourth proportional to 3,151.28, 4,346.52 and 2,156.60 is: 2,974.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.28 : 4,346.52 = 2,156.60 : x
  2. Step 2: Convert to fraction form
    3,151.28/4,346.52 = 2,156.60/x
  3. Step 3: Cross multiply
    3,151.28x = 4,346.52 × 2,156.60
  4. Step 4: Simplify right side
    3,151.28x = 9,373,705.03
  5. Step 5: Solve for x
    x = 9,373,705.03/3,151.28
  6. Step 6: Final answer
    x = 2,974.57

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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.