Home / 1,291.14-1,928.12-1,126.98

Finding the Fourth Proportional to 1,291.14, 1,928.12 and 1,126.98

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Solution

The fourth proportional to 1,291.14, 1,928.12 and 1,126.98 is: 1,682.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291.14 : 1,928.12 = 1,126.98 : x
  2. Step 2: Convert to fraction form
    1,291.14/1,928.12 = 1,126.98/x
  3. Step 3: Cross multiply
    1,291.14x = 1,928.12 × 1,126.98
  4. Step 4: Simplify right side
    1,291.14x = 2,172,947.04
  5. Step 5: Solve for x
    x = 2,172,947.04/1,291.14
  6. Step 6: Final answer
    x = 1,682.97

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.