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Finding the Fourth Proportional to 3,393.68, 4,685.30 and 2,135.82

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Solution

The fourth proportional to 3,393.68, 4,685.30 and 2,135.82 is: 2,948.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.68 : 4,685.30 = 2,135.82 : x
  2. Step 2: Convert to fraction form
    3,393.68/4,685.30 = 2,135.82/x
  3. Step 3: Cross multiply
    3,393.68x = 4,685.30 × 2,135.82
  4. Step 4: Simplify right side
    3,393.68x = 10,006,946.77
  5. Step 5: Solve for x
    x = 10,006,946.77/3,393.68
  6. Step 6: Final answer
    x = 2,948.71

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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.