Home / 3,155.43-4,354.61-1,878.68

Finding the Fourth Proportional to 3,155.43, 4,354.61 and 1,878.68

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Solution

The fourth proportional to 3,155.43, 4,354.61 and 1,878.68 is: 2,592.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.43 : 4,354.61 = 1,878.68 : x
  2. Step 2: Convert to fraction form
    3,155.43/4,354.61 = 1,878.68/x
  3. Step 3: Cross multiply
    3,155.43x = 4,354.61 × 1,878.68
  4. Step 4: Simplify right side
    3,155.43x = 8,180,932.49
  5. Step 5: Solve for x
    x = 8,180,932.49/3,155.43
  6. Step 6: Final answer
    x = 2,592.65

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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.