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Finding the Fourth Proportional to 8,878.86, 12,252.74 and 4,900

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Solution

The fourth proportional to 8,878.86, 12,252.74 and 4,900 is: 6,761.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.86 : 12,252.74 = 4,900 : x
  2. Step 2: Convert to fraction form
    8,878.86/12,252.74 = 4,900/x
  3. Step 3: Cross multiply
    8,878.86x = 12,252.74 × 4,900
  4. Step 4: Simplify right side
    8,878.86x = 60,038,426
  5. Step 5: Solve for x
    x = 60,038,426/8,878.86
  6. Step 6: Final answer
    x = 6,761.95

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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.