Home / 3,155.61-4,354.68-2,272.32

Finding the Fourth Proportional to 3,155.61, 4,354.68 and 2,272.32

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Solution

The fourth proportional to 3,155.61, 4,354.68 and 2,272.32 is: 3,135.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.61 : 4,354.68 = 2,272.32 : x
  2. Step 2: Convert to fraction form
    3,155.61/4,354.68 = 2,272.32/x
  3. Step 3: Cross multiply
    3,155.61x = 4,354.68 × 2,272.32
  4. Step 4: Simplify right side
    3,155.61x = 9,895,226.46
  5. Step 5: Solve for x
    x = 9,895,226.46/3,155.61
  6. Step 6: Final answer
    x = 3,135.76

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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.