Home / 1,912.02-2,867.76-613.32

Finding the Fourth Proportional to 1,912.02, 2,867.76 and 613.32

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Solution

The fourth proportional to 1,912.02, 2,867.76 and 613.32 is: 919.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.02 : 2,867.76 = 613.32 : x
  2. Step 2: Convert to fraction form
    1,912.02/2,867.76 = 613.32/x
  3. Step 3: Cross multiply
    1,912.02x = 2,867.76 × 613.32
  4. Step 4: Simplify right side
    1,912.02x = 1,758,844.33
  5. Step 5: Solve for x
    x = 1,758,844.33/1,912.02
  6. Step 6: Final answer
    x = 919.89

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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.