Home / 5,157.32-7,120.80-3,170.54

Finding the Fourth Proportional to 5,157.32, 7,120.80 and 3,170.54

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Solution

The fourth proportional to 5,157.32, 7,120.80 and 3,170.54 is: 4,377.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.32 : 7,120.80 = 3,170.54 : x
  2. Step 2: Convert to fraction form
    5,157.32/7,120.80 = 3,170.54/x
  3. Step 3: Cross multiply
    5,157.32x = 7,120.80 × 3,170.54
  4. Step 4: Simplify right side
    5,157.32x = 22,576,781.23
  5. Step 5: Solve for x
    x = 22,576,781.23/5,157.32
  6. Step 6: Final answer
    x = 4,377.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.