Home / 9,680.32-13,360.08-5,489.92

Finding the Fourth Proportional to 9,680.32, 13,360.08 and 5,489.92

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Solution

The fourth proportional to 9,680.32, 13,360.08 and 5,489.92 is: 7,576.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,680.32 : 13,360.08 = 5,489.92 : x
  2. Step 2: Convert to fraction form
    9,680.32/13,360.08 = 5,489.92/x
  3. Step 3: Cross multiply
    9,680.32x = 13,360.08 × 5,489.92
  4. Step 4: Simplify right side
    9,680.32x = 73,345,770.39
  5. Step 5: Solve for x
    x = 73,345,770.39/9,680.32
  6. Step 6: Final answer
    x = 7,576.79

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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.