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Finding the Fourth Proportional to 7,299.25, 10,072.97 and 3,987.25

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Solution

The fourth proportional to 7,299.25, 10,072.97 and 3,987.25 is: 5,502.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,299.25 : 10,072.97 = 3,987.25 : x
  2. Step 2: Convert to fraction form
    7,299.25/10,072.97 = 3,987.25/x
  3. Step 3: Cross multiply
    7,299.25x = 10,072.97 × 3,987.25
  4. Step 4: Simplify right side
    7,299.25x = 40,163,449.63
  5. Step 5: Solve for x
    x = 40,163,449.63/7,299.25
  6. Step 6: Final answer
    x = 5,502.41

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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.