Home / 1,698.20-2,548.44-724.53

Finding the Fourth Proportional to 1,698.20, 2,548.44 and 724.53

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Solution

The fourth proportional to 1,698.20, 2,548.44 and 724.53 is: 1,087.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.20 : 2,548.44 = 724.53 : x
  2. Step 2: Convert to fraction form
    1,698.20/2,548.44 = 724.53/x
  3. Step 3: Cross multiply
    1,698.20x = 2,548.44 × 724.53
  4. Step 4: Simplify right side
    1,698.20x = 1,846,421.23
  5. Step 5: Solve for x
    x = 1,846,421.23/1,698.20
  6. Step 6: Final answer
    x = 1,087.28

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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.