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Finding the Fourth Proportional to 8,998.61, 12,418.10 and 5,019.98

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Solution

The fourth proportional to 8,998.61, 12,418.10 and 5,019.98 is: 6,927.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,998.61 : 12,418.10 = 5,019.98 : x
  2. Step 2: Convert to fraction form
    8,998.61/12,418.10 = 5,019.98/x
  3. Step 3: Cross multiply
    8,998.61x = 12,418.10 × 5,019.98
  4. Step 4: Simplify right side
    8,998.61x = 62,338,613.64
  5. Step 5: Solve for x
    x = 62,338,613.64/8,998.61
  6. Step 6: Final answer
    x = 6,927.58

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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.