Home / 3,990.17-5,985.46-1,525.21

Finding the Fourth Proportional to 3,990.17, 5,985.46 and 1,525.21

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Solution

The fourth proportional to 3,990.17, 5,985.46 and 1,525.21 is: 2,287.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.17 : 5,985.46 = 1,525.21 : x
  2. Step 2: Convert to fraction form
    3,990.17/5,985.46 = 1,525.21/x
  3. Step 3: Cross multiply
    3,990.17x = 5,985.46 × 1,525.21
  4. Step 4: Simplify right side
    3,990.17x = 9,129,083.45
  5. Step 5: Solve for x
    x = 9,129,083.45/3,990.17
  6. Step 6: Final answer
    x = 2,287.89

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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.