Home / 5,102.89-7,042.40-2,864.91

Finding the Fourth Proportional to 5,102.89, 7,042.40 and 2,864.91

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Solution

The fourth proportional to 5,102.89, 7,042.40 and 2,864.91 is: 3,953.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,102.89 : 7,042.40 = 2,864.91 : x
  2. Step 2: Convert to fraction form
    5,102.89/7,042.40 = 2,864.91/x
  3. Step 3: Cross multiply
    5,102.89x = 7,042.40 × 2,864.91
  4. Step 4: Simplify right side
    5,102.89x = 20,175,845.47
  5. Step 5: Solve for x
    x = 20,175,845.47/5,102.89
  6. Step 6: Final answer
    x = 3,953.81

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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.