Home / 7,979.42-11,001.31-6,538.43

Finding the Fourth Proportional to 7,979.42, 11,001.31 and 6,538.43

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Solution

The fourth proportional to 7,979.42, 11,001.31 and 6,538.43 is: 9,014.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.42 : 11,001.31 = 6,538.43 : x
  2. Step 2: Convert to fraction form
    7,979.42/11,001.31 = 6,538.43/x
  3. Step 3: Cross multiply
    7,979.42x = 11,001.31 × 6,538.43
  4. Step 4: Simplify right side
    7,979.42x = 71,931,211.73
  5. Step 5: Solve for x
    x = 71,931,211.73/7,979.42
  6. Step 6: Final answer
    x = 9,014.59

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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.