Home / 8,664.40-12,990.16-3,040.56

Finding the Fourth Proportional to 8,664.40, 12,990.16 and 3,040.56

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Solution

The fourth proportional to 8,664.40, 12,990.16 and 3,040.56 is: 4,558.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.40 : 12,990.16 = 3,040.56 : x
  2. Step 2: Convert to fraction form
    8,664.40/12,990.16 = 3,040.56/x
  3. Step 3: Cross multiply
    8,664.40x = 12,990.16 × 3,040.56
  4. Step 4: Simplify right side
    8,664.40x = 39,497,360.89
  5. Step 5: Solve for x
    x = 39,497,360.89/8,664.40
  6. Step 6: Final answer
    x = 4,558.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.