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Finding the Fourth Proportional to 7,242.12, 9,993.78 and 4,447.08

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Solution

The fourth proportional to 7,242.12, 9,993.78 and 4,447.08 is: 6,136.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242.12 : 9,993.78 = 4,447.08 : x
  2. Step 2: Convert to fraction form
    7,242.12/9,993.78 = 4,447.08/x
  3. Step 3: Cross multiply
    7,242.12x = 9,993.78 × 4,447.08
  4. Step 4: Simplify right side
    7,242.12x = 44,443,139.16
  5. Step 5: Solve for x
    x = 44,443,139.16/7,242.12
  6. Step 6: Final answer
    x = 6,136.76

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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.