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Finding the Fourth Proportional to 9,912.95, 14,867.80 and 3,671.50

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Solution

The fourth proportional to 9,912.95, 14,867.80 and 3,671.50 is: 5,506.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.95 : 14,867.80 = 3,671.50 : x
  2. Step 2: Convert to fraction form
    9,912.95/14,867.80 = 3,671.50/x
  3. Step 3: Cross multiply
    9,912.95x = 14,867.80 × 3,671.50
  4. Step 4: Simplify right side
    9,912.95x = 54,587,127.70
  5. Step 5: Solve for x
    x = 54,587,127.70/9,912.95
  6. Step 6: Final answer
    x = 5,506.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.