Home / 2,912.07-4,368.86-1,872.57

Finding the Fourth Proportional to 2,912.07, 4,368.86 and 1,872.57

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Solution

The fourth proportional to 2,912.07, 4,368.86 and 1,872.57 is: 2,809.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.07 : 4,368.86 = 1,872.57 : x
  2. Step 2: Convert to fraction form
    2,912.07/4,368.86 = 1,872.57/x
  3. Step 3: Cross multiply
    2,912.07x = 4,368.86 × 1,872.57
  4. Step 4: Simplify right side
    2,912.07x = 8,180,996.17
  5. Step 5: Solve for x
    x = 8,180,996.17/2,912.07
  6. Step 6: Final answer
    x = 2,809.34

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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.