Home / 1,872.21-2,806.75-948.41

Finding the Fourth Proportional to 1,872.21, 2,806.75 and 948.41

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Solution

The fourth proportional to 1,872.21, 2,806.75 and 948.41 is: 1,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.21 : 2,806.75 = 948.41 : x
  2. Step 2: Convert to fraction form
    1,872.21/2,806.75 = 948.41/x
  3. Step 3: Cross multiply
    1,872.21x = 2,806.75 × 948.41
  4. Step 4: Simplify right side
    1,872.21x = 2,661,947.44
  5. Step 5: Solve for x
    x = 2,661,947.44/1,872.21
  6. Step 6: Final answer
    x = 1,421.82

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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.