Home / 5,175.32-7,141.88-2,817.47

Finding the Fourth Proportional to 5,175.32, 7,141.88 and 2,817.47

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Solution

The fourth proportional to 5,175.32, 7,141.88 and 2,817.47 is: 3,888.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.32 : 7,141.88 = 2,817.47 : x
  2. Step 2: Convert to fraction form
    5,175.32/7,141.88 = 2,817.47/x
  3. Step 3: Cross multiply
    5,175.32x = 7,141.88 × 2,817.47
  4. Step 4: Simplify right side
    5,175.32x = 20,121,982.85
  5. Step 5: Solve for x
    x = 20,121,982.85/5,175.32
  6. Step 6: Final answer
    x = 3,888.07

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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.