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Finding the Fourth Proportional to 9,680.63, 13,359.26 and 5,488.88

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Solution

The fourth proportional to 9,680.63, 13,359.26 and 5,488.88 is: 7,574.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,680.63 : 13,359.26 = 5,488.88 : x
  2. Step 2: Convert to fraction form
    9,680.63/13,359.26 = 5,488.88/x
  3. Step 3: Cross multiply
    9,680.63x = 13,359.26 × 5,488.88
  4. Step 4: Simplify right side
    9,680.63x = 73,327,375.03
  5. Step 5: Solve for x
    x = 73,327,375.03/9,680.63
  6. Step 6: Final answer
    x = 7,574.65

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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.