Home / 3,157.44-4,737.18-1,209.78

Finding the Fourth Proportional to 3,157.44, 4,737.18 and 1,209.78

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Solution

The fourth proportional to 3,157.44, 4,737.18 and 1,209.78 is: 1,815.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.44 : 4,737.18 = 1,209.78 : x
  2. Step 2: Convert to fraction form
    3,157.44/4,737.18 = 1,209.78/x
  3. Step 3: Cross multiply
    3,157.44x = 4,737.18 × 1,209.78
  4. Step 4: Simplify right side
    3,157.44x = 5,730,945.62
  5. Step 5: Solve for x
    x = 5,730,945.62/3,157.44
  6. Step 6: Final answer
    x = 1,815.06

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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.