Home / 8,559.60-11,815.50-6,441.29

Finding the Fourth Proportional to 8,559.60, 11,815.50 and 6,441.29

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Solution

The fourth proportional to 8,559.60, 11,815.50 and 6,441.29 is: 8,891.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559.60 : 11,815.50 = 6,441.29 : x
  2. Step 2: Convert to fraction form
    8,559.60/11,815.50 = 6,441.29/x
  3. Step 3: Cross multiply
    8,559.60x = 11,815.50 × 6,441.29
  4. Step 4: Simplify right side
    8,559.60x = 76,107,062.00
  5. Step 5: Solve for x
    x = 76,107,062.00/8,559.60
  6. Step 6: Final answer
    x = 8,891.43

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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.