Home / 3,420.03-5,132.28-3,141.20

Finding the Fourth Proportional to 3,420.03, 5,132.28 and 3,141.20

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Solution

The fourth proportional to 3,420.03, 5,132.28 and 3,141.20 is: 4,713.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.03 : 5,132.28 = 3,141.20 : x
  2. Step 2: Convert to fraction form
    3,420.03/5,132.28 = 3,141.20/x
  3. Step 3: Cross multiply
    3,420.03x = 5,132.28 × 3,141.20
  4. Step 4: Simplify right side
    3,420.03x = 16,121,492.27
  5. Step 5: Solve for x
    x = 16,121,492.27/3,420.03
  6. Step 6: Final answer
    x = 4,713.85

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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.