Home / 8,478.32-11,700.50-5,121.07

Finding the Fourth Proportional to 8,478.32, 11,700.50 and 5,121.07

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Solution

The fourth proportional to 8,478.32, 11,700.50 and 5,121.07 is: 7,067.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.32 : 11,700.50 = 5,121.07 : x
  2. Step 2: Convert to fraction form
    8,478.32/11,700.50 = 5,121.07/x
  3. Step 3: Cross multiply
    8,478.32x = 11,700.50 × 5,121.07
  4. Step 4: Simplify right side
    8,478.32x = 59,919,079.54
  5. Step 5: Solve for x
    x = 59,919,079.54/8,478.32
  6. Step 6: Final answer
    x = 7,067.33

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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.