Home / 1,538.36-2,309.11-1,126.27

Finding the Fourth Proportional to 1,538.36, 2,309.11 and 1,126.27

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Solution

The fourth proportional to 1,538.36, 2,309.11 and 1,126.27 is: 1,690.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.36 : 2,309.11 = 1,126.27 : x
  2. Step 2: Convert to fraction form
    1,538.36/2,309.11 = 1,126.27/x
  3. Step 3: Cross multiply
    1,538.36x = 2,309.11 × 1,126.27
  4. Step 4: Simplify right side
    1,538.36x = 2,600,675.69
  5. Step 5: Solve for x
    x = 2,600,675.69/1,538.36
  6. Step 6: Final answer
    x = 1,690.55

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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.