Home / 2,820.41-4,227.51-1,431.80

Finding the Fourth Proportional to 2,820.41, 4,227.51 and 1,431.80

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Solution

The fourth proportional to 2,820.41, 4,227.51 and 1,431.80 is: 2,146.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.41 : 4,227.51 = 1,431.80 : x
  2. Step 2: Convert to fraction form
    2,820.41/4,227.51 = 1,431.80/x
  3. Step 3: Cross multiply
    2,820.41x = 4,227.51 × 1,431.80
  4. Step 4: Simplify right side
    2,820.41x = 6,052,948.82
  5. Step 5: Solve for x
    x = 6,052,948.82/2,820.41
  6. Step 6: Final answer
    x = 2,146.12

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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.