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Finding the Fourth Proportional to 7,995.42, 11,988.54 and 2,447.28

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Solution

The fourth proportional to 7,995.42, 11,988.54 and 2,447.28 is: 3,669.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,995.42 : 11,988.54 = 2,447.28 : x
  2. Step 2: Convert to fraction form
    7,995.42/11,988.54 = 2,447.28/x
  3. Step 3: Cross multiply
    7,995.42x = 11,988.54 × 2,447.28
  4. Step 4: Simplify right side
    7,995.42x = 29,339,314.17
  5. Step 5: Solve for x
    x = 29,339,314.17/7,995.42
  6. Step 6: Final answer
    x = 3,669.52

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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.