Home / 9,780.32-13,489.52-6,189.92

Finding the Fourth Proportional to 9,780.32, 13,489.52 and 6,189.92

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Solution

The fourth proportional to 9,780.32, 13,489.52 and 6,189.92 is: 8,537.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,780.32 : 13,489.52 = 6,189.92 : x
  2. Step 2: Convert to fraction form
    9,780.32/13,489.52 = 6,189.92/x
  3. Step 3: Cross multiply
    9,780.32x = 13,489.52 × 6,189.92
  4. Step 4: Simplify right side
    9,780.32x = 83,499,049.64
  5. Step 5: Solve for x
    x = 83,499,049.64/9,780.32
  6. Step 6: Final answer
    x = 8,537.46

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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.