Home / 2,822.02-4,239.52-1,991.00

Finding the Fourth Proportional to 2,822.02, 4,239.52 and 1,991.00

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Solution

The fourth proportional to 2,822.02, 4,239.52 and 1,991.00 is: 2,991.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.02 : 4,239.52 = 1,991.00 : x
  2. Step 2: Convert to fraction form
    2,822.02/4,239.52 = 1,991.00/x
  3. Step 3: Cross multiply
    2,822.02x = 4,239.52 × 1,991.00
  4. Step 4: Simplify right side
    2,822.02x = 8,440,877.29
  5. Step 5: Solve for x
    x = 8,440,877.29/2,822.02
  6. Step 6: Final answer
    x = 2,991.07

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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.