Home / 2,822.40-4,231.02-1,089.72

Finding the Fourth Proportional to 2,822.40, 4,231.02 and 1,089.72

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Solution

The fourth proportional to 2,822.40, 4,231.02 and 1,089.72 is: 1,633.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.40 : 4,231.02 = 1,089.72 : x
  2. Step 2: Convert to fraction form
    2,822.40/4,231.02 = 1,089.72/x
  3. Step 3: Cross multiply
    2,822.40x = 4,231.02 × 1,089.72
  4. Step 4: Simplify right side
    2,822.40x = 4,610,627.11
  5. Step 5: Solve for x
    x = 4,610,627.11/2,822.40
  6. Step 6: Final answer
    x = 1,633.58

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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.