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Finding the Fourth Proportional to 7,200.94, 9,937.29 and 3,888.94

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Solution

The fourth proportional to 7,200.94, 9,937.29 and 3,888.94 is: 5,366.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.94 : 9,937.29 = 3,888.94 : x
  2. Step 2: Convert to fraction form
    7,200.94/9,937.29 = 3,888.94/x
  3. Step 3: Cross multiply
    7,200.94x = 9,937.29 × 3,888.94
  4. Step 4: Simplify right side
    7,200.94x = 38,645,514.31
  5. Step 5: Solve for x
    x = 38,645,514.31/7,200.94
  6. Step 6: Final answer
    x = 5,366.73

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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.