Home / 3,478.10-5,229.30-3,405.20

Finding the Fourth Proportional to 3,478.10, 5,229.30 and 3,405.20

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Solution

The fourth proportional to 3,478.10, 5,229.30 and 3,405.20 is: 5,119.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.10 : 5,229.30 = 3,405.20 : x
  2. Step 2: Convert to fraction form
    3,478.10/5,229.30 = 3,405.20/x
  3. Step 3: Cross multiply
    3,478.10x = 5,229.30 × 3,405.20
  4. Step 4: Simplify right side
    3,478.10x = 17,806,812.36
  5. Step 5: Solve for x
    x = 17,806,812.36/3,478.10
  6. Step 6: Final answer
    x = 5,119.70

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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.