Home / 3,225.30-4,845.15-3,138.90

Finding the Fourth Proportional to 3,225.30, 4,845.15 and 3,138.90

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Solution

The fourth proportional to 3,225.30, 4,845.15 and 3,138.90 is: 4,715.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,225.30 : 4,845.15 = 3,138.90 : x
  2. Step 2: Convert to fraction form
    3,225.30/4,845.15 = 3,138.90/x
  3. Step 3: Cross multiply
    3,225.30x = 4,845.15 × 3,138.90
  4. Step 4: Simplify right side
    3,225.30x = 15,208,441.34
  5. Step 5: Solve for x
    x = 15,208,441.34/3,225.30
  6. Step 6: Final answer
    x = 4,715.36

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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.