Home / 3,255.31-4,878.04-2,155.74

Finding the Fourth Proportional to 3,255.31, 4,878.04 and 2,155.74

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Solution

The fourth proportional to 3,255.31, 4,878.04 and 2,155.74 is: 3,230.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,255.31 : 4,878.04 = 2,155.74 : x
  2. Step 2: Convert to fraction form
    3,255.31/4,878.04 = 2,155.74/x
  3. Step 3: Cross multiply
    3,255.31x = 4,878.04 × 2,155.74
  4. Step 4: Simplify right side
    3,255.31x = 10,515,785.95
  5. Step 5: Solve for x
    x = 10,515,785.95/3,255.31
  6. Step 6: Final answer
    x = 3,230.35

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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.