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Finding the Fourth Proportional to 8,339.70, 12,509.55 and 2,792.01

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Solution

The fourth proportional to 8,339.70, 12,509.55 and 2,792.01 is: 4,188.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.70 : 12,509.55 = 2,792.01 : x
  2. Step 2: Convert to fraction form
    8,339.70/12,509.55 = 2,792.01/x
  3. Step 3: Cross multiply
    8,339.70x = 12,509.55 × 2,792.01
  4. Step 4: Simplify right side
    8,339.70x = 34,926,788.70
  5. Step 5: Solve for x
    x = 34,926,788.70/8,339.70
  6. Step 6: Final answer
    x = 4,188.02

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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.