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Finding the Fourth Proportional to 8,894.90, 12,274.84 and 5,118.09

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Solution

The fourth proportional to 8,894.90, 12,274.84 and 5,118.09 is: 7,062.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,894.90 : 12,274.84 = 5,118.09 : x
  2. Step 2: Convert to fraction form
    8,894.90/12,274.84 = 5,118.09/x
  3. Step 3: Cross multiply
    8,894.90x = 12,274.84 × 5,118.09
  4. Step 4: Simplify right side
    8,894.90x = 62,823,749.61
  5. Step 5: Solve for x
    x = 62,823,749.61/8,894.90
  6. Step 6: Final answer
    x = 7,062.90

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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.