Home / 3,542.78-5,315.12-3,155.44

Finding the Fourth Proportional to 3,542.78, 5,315.12 and 3,155.44

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Solution

The fourth proportional to 3,542.78, 5,315.12 and 3,155.44 is: 4,734.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,542.78 : 5,315.12 = 3,155.44 : x
  2. Step 2: Convert to fraction form
    3,542.78/5,315.12 = 3,155.44/x
  3. Step 3: Cross multiply
    3,542.78x = 5,315.12 × 3,155.44
  4. Step 4: Simplify right side
    3,542.78x = 16,771,542.25
  5. Step 5: Solve for x
    x = 16,771,542.25/3,542.78
  6. Step 6: Final answer
    x = 4,734.01

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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.