Home / 2,810.41-4,215.25-862.45

Finding the Fourth Proportional to 2,810.41, 4,215.25 and 862.45

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Solution

The fourth proportional to 2,810.41, 4,215.25 and 862.45 is: 1,293.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.41 : 4,215.25 = 862.45 : x
  2. Step 2: Convert to fraction form
    2,810.41/4,215.25 = 862.45/x
  3. Step 3: Cross multiply
    2,810.41x = 4,215.25 × 862.45
  4. Step 4: Simplify right side
    2,810.41x = 3,635,438.05
  5. Step 5: Solve for x
    x = 3,635,438.05/2,810.41
  6. Step 6: Final answer
    x = 1,293.56

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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.