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Finding the Fourth Proportional to 8,558.87, 12,838.42 and 2,319.51

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Solution

The fourth proportional to 8,558.87, 12,838.42 and 2,319.51 is: 3,479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,558.87 : 12,838.42 = 2,319.51 : x
  2. Step 2: Convert to fraction form
    8,558.87/12,838.42 = 2,319.51/x
  3. Step 3: Cross multiply
    8,558.87x = 12,838.42 × 2,319.51
  4. Step 4: Simplify right side
    8,558.87x = 29,778,865.03
  5. Step 5: Solve for x
    x = 29,778,865.03/8,558.87
  6. Step 6: Final answer
    x = 3,479.30

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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.