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Finding the Fourth Proportional to 8,818.90, 12,170.52 and 4,839.98

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Solution

The fourth proportional to 8,818.90, 12,170.52 and 4,839.98 is: 6,679.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,818.90 : 12,170.52 = 4,839.98 : x
  2. Step 2: Convert to fraction form
    8,818.90/12,170.52 = 4,839.98/x
  3. Step 3: Cross multiply
    8,818.90x = 12,170.52 × 4,839.98
  4. Step 4: Simplify right side
    8,818.90x = 58,905,012.54
  5. Step 5: Solve for x
    x = 58,905,012.54/8,818.90
  6. Step 6: Final answer
    x = 6,679.41

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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.