Home / 1,538.45-2,309.25-1,126.36

Finding the Fourth Proportional to 1,538.45, 2,309.25 and 1,126.36

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Solution

The fourth proportional to 1,538.45, 2,309.25 and 1,126.36 is: 1,690.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.45 : 2,309.25 = 1,126.36 : x
  2. Step 2: Convert to fraction form
    1,538.45/2,309.25 = 1,126.36/x
  3. Step 3: Cross multiply
    1,538.45x = 2,309.25 × 1,126.36
  4. Step 4: Simplify right side
    1,538.45x = 2,601,046.83
  5. Step 5: Solve for x
    x = 2,601,046.83/1,538.45
  6. Step 6: Final answer
    x = 1,690.69

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1.5x scale

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.