Home / 2,273.02-3,136.81-1,278.40

Finding the Fourth Proportional to 2,273.02, 3,136.81 and 1,278.40

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Solution

The fourth proportional to 2,273.02, 3,136.81 and 1,278.40 is: 1,764.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,273.02 : 3,136.81 = 1,278.40 : x
  2. Step 2: Convert to fraction form
    2,273.02/3,136.81 = 1,278.40/x
  3. Step 3: Cross multiply
    2,273.02x = 3,136.81 × 1,278.40
  4. Step 4: Simplify right side
    2,273.02x = 4,010,097.90
  5. Step 5: Solve for x
    x = 4,010,097.90/2,273.02
  6. Step 6: Final answer
    x = 1,764.22

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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.