Home / 2,862.90-3,949.65-1,816.02

Finding the Fourth Proportional to 2,862.90, 3,949.65 and 1,816.02

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Solution

The fourth proportional to 2,862.90, 3,949.65 and 1,816.02 is: 2,505.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,862.90 : 3,949.65 = 1,816.02 : x
  2. Step 2: Convert to fraction form
    2,862.90/3,949.65 = 1,816.02/x
  3. Step 3: Cross multiply
    2,862.90x = 3,949.65 × 1,816.02
  4. Step 4: Simplify right side
    2,862.90x = 7,172,643.39
  5. Step 5: Solve for x
    x = 7,172,643.39/2,862.90
  6. Step 6: Final answer
    x = 2,505.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.