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Finding the Fourth Proportional to 8,998.50, 12,418.62 and 5,020.58

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Solution

The fourth proportional to 8,998.50, 12,418.62 and 5,020.58 is: 6,928.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,998.50 : 12,418.62 = 5,020.58 : x
  2. Step 2: Convert to fraction form
    8,998.50/12,418.62 = 5,020.58/x
  3. Step 3: Cross multiply
    8,998.50x = 12,418.62 × 5,020.58
  4. Step 4: Simplify right side
    8,998.50x = 62,348,675.20
  5. Step 5: Solve for x
    x = 62,348,675.20/8,998.50
  6. Step 6: Final answer
    x = 6,928.79

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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.