Home / 5,175.89-7,142.75-2,818.04

Finding the Fourth Proportional to 5,175.89, 7,142.75 and 2,818.04

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Solution

The fourth proportional to 5,175.89, 7,142.75 and 2,818.04 is: 3,888.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.89 : 7,142.75 = 2,818.04 : x
  2. Step 2: Convert to fraction form
    5,175.89/7,142.75 = 2,818.04/x
  3. Step 3: Cross multiply
    5,175.89x = 7,142.75 × 2,818.04
  4. Step 4: Simplify right side
    5,175.89x = 20,128,526.54
  5. Step 5: Solve for x
    x = 20,128,526.54/5,175.89
  6. Step 6: Final answer
    x = 3,888.90

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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.