Home / 6,781.20-10,155.60-3,314.40

Finding the Fourth Proportional to 6,781.20, 10,155.60 and 3,314.40

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Solution

The fourth proportional to 6,781.20, 10,155.60 and 3,314.40 is: 4,963.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781.20 : 10,155.60 = 3,314.40 : x
  2. Step 2: Convert to fraction form
    6,781.20/10,155.60 = 3,314.40/x
  3. Step 3: Cross multiply
    6,781.20x = 10,155.60 × 3,314.40
  4. Step 4: Simplify right side
    6,781.20x = 33,659,720.64
  5. Step 5: Solve for x
    x = 33,659,720.64/6,781.20
  6. Step 6: Final answer
    x = 4,963.68

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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.