Home / 1,881.02-2,821.66-494.39

Finding the Fourth Proportional to 1,881.02, 2,821.66 and 494.39

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Solution

The fourth proportional to 1,881.02, 2,821.66 and 494.39 is: 741.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,881.02 : 2,821.66 = 494.39 : x
  2. Step 2: Convert to fraction form
    1,881.02/2,821.66 = 494.39/x
  3. Step 3: Cross multiply
    1,881.02x = 2,821.66 × 494.39
  4. Step 4: Simplify right side
    1,881.02x = 1,395,006.31
  5. Step 5: Solve for x
    x = 1,395,006.31/1,881.02
  6. Step 6: Final answer
    x = 741.62

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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.