Home / 8,722.58-12,025.64-7,109.66

Finding the Fourth Proportional to 8,722.58, 12,025.64 and 7,109.66

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Solution

The fourth proportional to 8,722.58, 12,025.64 and 7,109.66 is: 9,801.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.58 : 12,025.64 = 7,109.66 : x
  2. Step 2: Convert to fraction form
    8,722.58/12,025.64 = 7,109.66/x
  3. Step 3: Cross multiply
    8,722.58x = 12,025.64 × 7,109.66
  4. Step 4: Simplify right side
    8,722.58x = 85,498,116.01
  5. Step 5: Solve for x
    x = 85,498,116.01/8,722.58
  6. Step 6: Final answer
    x = 9,801.94

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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.