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Finding the Fourth Proportional to 7,979.51, 12,029.02 and 7,444.31

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Solution

The fourth proportional to 7,979.51, 12,029.02 and 7,444.31 is: 11,222.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.51 : 12,029.02 = 7,444.31 : x
  2. Step 2: Convert to fraction form
    7,979.51/12,029.02 = 7,444.31/x
  3. Step 3: Cross multiply
    7,979.51x = 12,029.02 × 7,444.31
  4. Step 4: Simplify right side
    7,979.51x = 89,547,716.99
  5. Step 5: Solve for x
    x = 89,547,716.99/7,979.51
  6. Step 6: Final answer
    x = 11,222.20

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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.