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Finding the Fourth Proportional to 8,388.64, 12,582.54 and 2,545.72

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Solution

The fourth proportional to 8,388.64, 12,582.54 and 2,545.72 is: 3,818.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,388.64 : 12,582.54 = 2,545.72 : x
  2. Step 2: Convert to fraction form
    8,388.64/12,582.54 = 2,545.72/x
  3. Step 3: Cross multiply
    8,388.64x = 12,582.54 × 2,545.72
  4. Step 4: Simplify right side
    8,388.64x = 32,031,623.73
  5. Step 5: Solve for x
    x = 32,031,623.73/8,388.64
  6. Step 6: Final answer
    x = 3,818.45

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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.