Home / 5,159.40-7,120.62-3,170.22

Finding the Fourth Proportional to 5,159.40, 7,120.62 and 3,170.22

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Solution

The fourth proportional to 5,159.40, 7,120.62 and 3,170.22 is: 4,375.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.40 : 7,120.62 = 3,170.22 : x
  2. Step 2: Convert to fraction form
    5,159.40/7,120.62 = 3,170.22/x
  3. Step 3: Cross multiply
    5,159.40x = 7,120.62 × 3,170.22
  4. Step 4: Simplify right side
    5,159.40x = 22,573,931.94
  5. Step 5: Solve for x
    x = 22,573,931.94/5,159.40
  6. Step 6: Final answer
    x = 4,375.30

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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.