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Finding the Fourth Proportional to 10,641.84, 15,963.72 and 3,246.40

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Solution

The fourth proportional to 10,641.84, 15,963.72 and 3,246.40 is: 4,869.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,641.84 : 15,963.72 = 3,246.40 : x
  2. Step 2: Convert to fraction form
    10,641.84/15,963.72 = 3,246.40/x
  3. Step 3: Cross multiply
    10,641.84x = 15,963.72 × 3,246.40
  4. Step 4: Simplify right side
    10,641.84x = 51,824,620.61
  5. Step 5: Solve for x
    x = 51,824,620.61/10,641.84
  6. Step 6: Final answer
    x = 4,869.89

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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.