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Finding the Fourth Proportional to 8,040.72, 12,006.48 and 6,917.52

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Solution

The fourth proportional to 8,040.72, 12,006.48 and 6,917.52 is: 10,329.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,040.72 : 12,006.48 = 6,917.52 : x
  2. Step 2: Convert to fraction form
    8,040.72/12,006.48 = 6,917.52/x
  3. Step 3: Cross multiply
    8,040.72x = 12,006.48 × 6,917.52
  4. Step 4: Simplify right side
    8,040.72x = 83,055,065.53
  5. Step 5: Solve for x
    x = 83,055,065.53/8,040.72
  6. Step 6: Final answer
    x = 10,329.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.