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Finding the Fourth Proportional to 8,897.65, 12,277.68 and 4,918.79

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Solution

The fourth proportional to 8,897.65, 12,277.68 and 4,918.79 is: 6,787.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,897.65 : 12,277.68 = 4,918.79 : x
  2. Step 2: Convert to fraction form
    8,897.65/12,277.68 = 4,918.79/x
  3. Step 3: Cross multiply
    8,897.65x = 12,277.68 × 4,918.79
  4. Step 4: Simplify right side
    8,897.65x = 60,391,341.86
  5. Step 5: Solve for x
    x = 60,391,341.86/8,897.65
  6. Step 6: Final answer
    x = 6,787.34

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1.5x scale

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.