Home / 3,989-5,985.66-2,235.56

Finding the Fourth Proportional to 3,989, 5,985.66 and 2,235.56

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Solution

The fourth proportional to 3,989, 5,985.66 and 2,235.56 is: 3,354.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989 : 5,985.66 = 2,235.56 : x
  2. Step 2: Convert to fraction form
    3,989/5,985.66 = 2,235.56/x
  3. Step 3: Cross multiply
    3,989x = 5,985.66 × 2,235.56
  4. Step 4: Simplify right side
    3,989x = 13,381,302.07
  5. Step 5: Solve for x
    x = 13,381,302.07/3,989
  6. Step 6: Final answer
    x = 3,354.55

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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.