Home / 8,020.40-11,067.36-4,877.12

Finding the Fourth Proportional to 8,020.40, 11,067.36 and 4,877.12

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Solution

The fourth proportional to 8,020.40, 11,067.36 and 4,877.12 is: 6,729.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,020.40 : 11,067.36 = 4,877.12 : x
  2. Step 2: Convert to fraction form
    8,020.40/11,067.36 = 4,877.12/x
  3. Step 3: Cross multiply
    8,020.40x = 11,067.36 × 4,877.12
  4. Step 4: Simplify right side
    8,020.40x = 53,976,842.80
  5. Step 5: Solve for x
    x = 53,976,842.80/8,020.40
  6. Step 6: Final answer
    x = 6,729.94

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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.