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Finding the Fourth Proportional to 8,040.16, 12,005.25 and 7,201.81

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Solution

The fourth proportional to 8,040.16, 12,005.25 and 7,201.81 is: 10,753.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,040.16 : 12,005.25 = 7,201.81 : x
  2. Step 2: Convert to fraction form
    8,040.16/12,005.25 = 7,201.81/x
  3. Step 3: Cross multiply
    8,040.16x = 12,005.25 × 7,201.81
  4. Step 4: Simplify right side
    8,040.16x = 86,459,469.48
  5. Step 5: Solve for x
    x = 86,459,469.48/8,040.16
  6. Step 6: Final answer
    x = 10,753.46

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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.