Home / 8,898-12,278.76-4,918.89

Finding the Fourth Proportional to 8,898, 12,278.76 and 4,918.89

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Solution

The fourth proportional to 8,898, 12,278.76 and 4,918.89 is: 6,787.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898 : 12,278.76 = 4,918.89 : x
  2. Step 2: Convert to fraction form
    8,898/12,278.76 = 4,918.89/x
  3. Step 3: Cross multiply
    8,898x = 12,278.76 × 4,918.89
  4. Step 4: Simplify right side
    8,898x = 60,397,869.78
  5. Step 5: Solve for x
    x = 60,397,869.78/8,898
  6. Step 6: Final answer
    x = 6,787.80

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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.