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Finding the Fourth Proportional to 8,869, 12,239.08 and 4,890.49

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Solution

The fourth proportional to 8,869, 12,239.08 and 4,890.49 is: 6,748.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869 : 12,239.08 = 4,890.49 : x
  2. Step 2: Convert to fraction form
    8,869/12,239.08 = 4,890.49/x
  3. Step 3: Cross multiply
    8,869x = 12,239.08 × 4,890.49
  4. Step 4: Simplify right side
    8,869x = 59,855,098.35
  5. Step 5: Solve for x
    x = 59,855,098.35/8,869
  6. Step 6: Final answer
    x = 6,748.80

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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.