Home / 5,138.40-7,707.60-3,170.10

Finding the Fourth Proportional to 5,138.40, 7,707.60 and 3,170.10

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Solution

The fourth proportional to 5,138.40, 7,707.60 and 3,170.10 is: 4,755.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.40 : 7,707.60 = 3,170.10 : x
  2. Step 2: Convert to fraction form
    5,138.40/7,707.60 = 3,170.10/x
  3. Step 3: Cross multiply
    5,138.40x = 7,707.60 × 3,170.10
  4. Step 4: Simplify right side
    5,138.40x = 24,433,862.76
  5. Step 5: Solve for x
    x = 24,433,862.76/5,138.40
  6. Step 6: Final answer
    x = 4,755.15

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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.