Home / 7,871.52-10,872.45-5,714.62

Finding the Fourth Proportional to 7,871.52, 10,872.45 and 5,714.62

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Solution

The fourth proportional to 7,871.52, 10,872.45 and 5,714.62 is: 7,893.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,871.52 : 10,872.45 = 5,714.62 : x
  2. Step 2: Convert to fraction form
    7,871.52/10,872.45 = 5,714.62/x
  3. Step 3: Cross multiply
    7,871.52x = 10,872.45 × 5,714.62
  4. Step 4: Simplify right side
    7,871.52x = 62,131,954.20
  5. Step 5: Solve for x
    x = 62,131,954.20/7,871.52
  6. Step 6: Final answer
    x = 7,893.26

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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.