Home / 2,810.26-4,215.57-862.21

Finding the Fourth Proportional to 2,810.26, 4,215.57 and 862.21

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Solution

The fourth proportional to 2,810.26, 4,215.57 and 862.21 is: 1,293.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.26 : 4,215.57 = 862.21 : x
  2. Step 2: Convert to fraction form
    2,810.26/4,215.57 = 862.21/x
  3. Step 3: Cross multiply
    2,810.26x = 4,215.57 × 862.21
  4. Step 4: Simplify right side
    2,810.26x = 3,634,706.61
  5. Step 5: Solve for x
    x = 3,634,706.61/2,810.26
  6. Step 6: Final answer
    x = 1,293.37

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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.