Home / 1,236.02-1,850.55-929.30

Finding the Fourth Proportional to 1,236.02, 1,850.55 and 929.30

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Solution

The fourth proportional to 1,236.02, 1,850.55 and 929.30 is: 1,391.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236.02 : 1,850.55 = 929.30 : x
  2. Step 2: Convert to fraction form
    1,236.02/1,850.55 = 929.30/x
  3. Step 3: Cross multiply
    1,236.02x = 1,850.55 × 929.30
  4. Step 4: Simplify right side
    1,236.02x = 1,719,716.12
  5. Step 5: Solve for x
    x = 1,719,716.12/1,236.02
  6. Step 6: Final answer
    x = 1,391.33

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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.