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Finding the Fourth Proportional to 9,920.95, 14,871.93 and 3,679.29

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Solution

The fourth proportional to 9,920.95, 14,871.93 and 3,679.29 is: 5,515.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,920.95 : 14,871.93 = 3,679.29 : x
  2. Step 2: Convert to fraction form
    9,920.95/14,871.93 = 3,679.29/x
  3. Step 3: Cross multiply
    9,920.95x = 14,871.93 × 3,679.29
  4. Step 4: Simplify right side
    9,920.95x = 54,718,143.33
  5. Step 5: Solve for x
    x = 54,718,143.33/9,920.95
  6. Step 6: Final answer
    x = 5,515.41

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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.