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Finding the Fourth Proportional to 8,808.78, 12,156.08 and 4,829.88

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Solution

The fourth proportional to 8,808.78, 12,156.08 and 4,829.88 is: 6,665.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,808.78 : 12,156.08 = 4,829.88 : x
  2. Step 2: Convert to fraction form
    8,808.78/12,156.08 = 4,829.88/x
  3. Step 3: Cross multiply
    8,808.78x = 12,156.08 × 4,829.88
  4. Step 4: Simplify right side
    8,808.78x = 58,712,407.67
  5. Step 5: Solve for x
    x = 58,712,407.67/8,808.78
  6. Step 6: Final answer
    x = 6,665.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.