Home / 9,479.40-13,078.92-6,122.36

Finding the Fourth Proportional to 9,479.40, 13,078.92 and 6,122.36

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Solution

The fourth proportional to 9,479.40, 13,078.92 and 6,122.36 is: 8,447.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,479.40 : 13,078.92 = 6,122.36 : x
  2. Step 2: Convert to fraction form
    9,479.40/13,078.92 = 6,122.36/x
  3. Step 3: Cross multiply
    9,479.40x = 13,078.92 × 6,122.36
  4. Step 4: Simplify right side
    9,479.40x = 80,073,856.65
  5. Step 5: Solve for x
    x = 80,073,856.65/9,479.40
  6. Step 6: Final answer
    x = 8,447.14

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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.