Home / 2,912.40-4,361.65-1,677.22

Finding the Fourth Proportional to 2,912.40, 4,361.65 and 1,677.22

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Solution

The fourth proportional to 2,912.40, 4,361.65 and 1,677.22 is: 2,511.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.40 : 4,361.65 = 1,677.22 : x
  2. Step 2: Convert to fraction form
    2,912.40/4,361.65 = 1,677.22/x
  3. Step 3: Cross multiply
    2,912.40x = 4,361.65 × 1,677.22
  4. Step 4: Simplify right side
    2,912.40x = 7,315,431.52
  5. Step 5: Solve for x
    x = 7,315,431.52/2,912.40
  6. Step 6: Final answer
    x = 2,511.82

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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.