Home / 1,985.54-2,969.36-1,517.15

Finding the Fourth Proportional to 1,985.54, 2,969.36 and 1,517.15

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Solution

The fourth proportional to 1,985.54, 2,969.36 and 1,517.15 is: 2,268.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.54 : 2,969.36 = 1,517.15 : x
  2. Step 2: Convert to fraction form
    1,985.54/2,969.36 = 1,517.15/x
  3. Step 3: Cross multiply
    1,985.54x = 2,969.36 × 1,517.15
  4. Step 4: Simplify right side
    1,985.54x = 4,504,964.52
  5. Step 5: Solve for x
    x = 4,504,964.52/1,985.54
  6. Step 6: Final answer
    x = 2,268.89

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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.