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Finding the Fourth Proportional to 9,225.99, 13,838.93 and 7,972.78

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Solution

The fourth proportional to 9,225.99, 13,838.93 and 7,972.78 is: 11,959.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,225.99 : 13,838.93 = 7,972.78 : x
  2. Step 2: Convert to fraction form
    9,225.99/13,838.93 = 7,972.78/x
  3. Step 3: Cross multiply
    9,225.99x = 13,838.93 × 7,972.78
  4. Step 4: Simplify right side
    9,225.99x = 110,334,770.56
  5. Step 5: Solve for x
    x = 110,334,770.56/9,225.99
  6. Step 6: Final answer
    x = 11,959.12

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Similar ratio
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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.