Home / 1,517.54-2,090.00-1,418.72

Finding the Fourth Proportional to 1,517.54, 2,090.00 and 1,418.72

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Solution

The fourth proportional to 1,517.54, 2,090.00 and 1,418.72 is: 1,953.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.54 : 2,090.00 = 1,418.72 : x
  2. Step 2: Convert to fraction form
    1,517.54/2,090.00 = 1,418.72/x
  3. Step 3: Cross multiply
    1,517.54x = 2,090.00 × 1,418.72
  4. Step 4: Simplify right side
    1,517.54x = 2,965,117.90
  5. Step 5: Solve for x
    x = 2,965,117.90/1,517.54
  6. Step 6: Final answer
    x = 1,953.90

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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.