Home / 3,989.30-5,985.56-1,799.06

Finding the Fourth Proportional to 3,989.30, 5,985.56 and 1,799.06

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Solution

The fourth proportional to 3,989.30, 5,985.56 and 1,799.06 is: 2,699.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.30 : 5,985.56 = 1,799.06 : x
  2. Step 2: Convert to fraction form
    3,989.30/5,985.56 = 1,799.06/x
  3. Step 3: Cross multiply
    3,989.30x = 5,985.56 × 1,799.06
  4. Step 4: Simplify right side
    3,989.30x = 10,768,381.57
  5. Step 5: Solve for x
    x = 10,768,381.57/3,989.30
  6. Step 6: Final answer
    x = 2,699.32

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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.