Home / 4,754.12-7,128.14-1,982.70

Finding the Fourth Proportional to 4,754.12, 7,128.14 and 1,982.70

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Solution

The fourth proportional to 4,754.12, 7,128.14 and 1,982.70 is: 2,972.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,754.12 : 7,128.14 = 1,982.70 : x
  2. Step 2: Convert to fraction form
    4,754.12/7,128.14 = 1,982.70/x
  3. Step 3: Cross multiply
    4,754.12x = 7,128.14 × 1,982.70
  4. Step 4: Simplify right side
    4,754.12x = 14,132,953.26
  5. Step 5: Solve for x
    x = 14,132,953.26/4,754.12
  6. Step 6: Final answer
    x = 2,972.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.