Home / 7,982.19-11,970.72-2,644.38

Finding the Fourth Proportional to 7,982.19, 11,970.72 and 2,644.38

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Solution

The fourth proportional to 7,982.19, 11,970.72 and 2,644.38 is: 3,965.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,982.19 : 11,970.72 = 2,644.38 : x
  2. Step 2: Convert to fraction form
    7,982.19/11,970.72 = 2,644.38/x
  3. Step 3: Cross multiply
    7,982.19x = 11,970.72 × 2,644.38
  4. Step 4: Simplify right side
    7,982.19x = 31,655,132.55
  5. Step 5: Solve for x
    x = 31,655,132.55/7,982.19
  6. Step 6: Final answer
    x = 3,965.72

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1.5x scale

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.