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Finding the Fourth Proportional to 8,897.86, 12,278.10 and 4,918.33

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Solution

The fourth proportional to 8,897.86, 12,278.10 and 4,918.33 is: 6,786.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,897.86 : 12,278.10 = 4,918.33 : x
  2. Step 2: Convert to fraction form
    8,897.86/12,278.10 = 4,918.33/x
  3. Step 3: Cross multiply
    8,897.86x = 12,278.10 × 4,918.33
  4. Step 4: Simplify right side
    8,897.86x = 60,387,735.32
  5. Step 5: Solve for x
    x = 60,387,735.32/8,897.86
  6. Step 6: Final answer
    x = 6,786.77

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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.