Home / 3,560.72-4,913.91-1,989.11

Finding the Fourth Proportional to 3,560.72, 4,913.91 and 1,989.11

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Solution

The fourth proportional to 3,560.72, 4,913.91 and 1,989.11 is: 2,745.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,560.72 : 4,913.91 = 1,989.11 : x
  2. Step 2: Convert to fraction form
    3,560.72/4,913.91 = 1,989.11/x
  3. Step 3: Cross multiply
    3,560.72x = 4,913.91 × 1,989.11
  4. Step 4: Simplify right side
    3,560.72x = 9,774,282.95
  5. Step 5: Solve for x
    x = 9,774,282.95/3,560.72
  6. Step 6: Final answer
    x = 2,745.03

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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.