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Finding the Fourth Proportional to 8,339.85, 12,510.01 and 2,792.16

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Solution

The fourth proportional to 8,339.85, 12,510.01 and 2,792.16 is: 4,188.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.85 : 12,510.01 = 2,792.16 : x
  2. Step 2: Convert to fraction form
    8,339.85/12,510.01 = 2,792.16/x
  3. Step 3: Cross multiply
    8,339.85x = 12,510.01 × 2,792.16
  4. Step 4: Simplify right side
    8,339.85x = 34,929,942.54
  5. Step 5: Solve for x
    x = 34,929,942.54/8,339.85
  6. Step 6: Final answer
    x = 4,188.32

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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.