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Finding the Fourth Proportional to 9,112, 12,571.68 and 5,573.44

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Solution

The fourth proportional to 9,112, 12,571.68 and 5,573.44 is: 7,689.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,112 : 12,571.68 = 5,573.44 : x
  2. Step 2: Convert to fraction form
    9,112/12,571.68 = 5,573.44/x
  3. Step 3: Cross multiply
    9,112x = 12,571.68 × 5,573.44
  4. Step 4: Simplify right side
    9,112x = 70,067,504.18
  5. Step 5: Solve for x
    x = 70,067,504.18/9,112
  6. Step 6: Final answer
    x = 7,689.59

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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.