Home / 3,151.60-4,727.40-2,892.40

Finding the Fourth Proportional to 3,151.60, 4,727.40 and 2,892.40

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Solution

The fourth proportional to 3,151.60, 4,727.40 and 2,892.40 is: 4,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.60 : 4,727.40 = 2,892.40 : x
  2. Step 2: Convert to fraction form
    3,151.60/4,727.40 = 2,892.40/x
  3. Step 3: Cross multiply
    3,151.60x = 4,727.40 × 2,892.40
  4. Step 4: Simplify right side
    3,151.60x = 13,673,531.76
  5. Step 5: Solve for x
    x = 13,673,531.76/3,151.60
  6. Step 6: Final answer
    x = 4,338.60

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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.