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Finding the Fourth Proportional to 7,979.70, 12,029.31 and 7,444.49

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Solution

The fourth proportional to 7,979.70, 12,029.31 and 7,444.49 is: 11,222.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.70 : 12,029.31 = 7,444.49 : x
  2. Step 2: Convert to fraction form
    7,979.70/12,029.31 = 7,444.49/x
  3. Step 3: Cross multiply
    7,979.70x = 12,029.31 × 7,444.49
  4. Step 4: Simplify right side
    7,979.70x = 89,552,080.16
  5. Step 5: Solve for x
    x = 89,552,080.16/7,979.70
  6. Step 6: Final answer
    x = 11,222.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.