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Finding the Fourth Proportional to 3,989.59, 5,985.03 and 1,357.33

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Solution

The fourth proportional to 3,989.59, 5,985.03 and 1,357.33 is: 2,036.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.59 : 5,985.03 = 1,357.33 : x
  2. Step 2: Convert to fraction form
    3,989.59/5,985.03 = 1,357.33/x
  3. Step 3: Cross multiply
    3,989.59x = 5,985.03 × 1,357.33
  4. Step 4: Simplify right side
    3,989.59x = 8,123,660.77
  5. Step 5: Solve for x
    x = 8,123,660.77/3,989.59
  6. Step 6: Final answer
    x = 2,036.21

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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.