Home / 1,126.19-1,690.07-395.82

Finding the Fourth Proportional to 1,126.19, 1,690.07 and 395.82

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Solution

The fourth proportional to 1,126.19, 1,690.07 and 395.82 is: 594.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.19 : 1,690.07 = 395.82 : x
  2. Step 2: Convert to fraction form
    1,126.19/1,690.07 = 395.82/x
  3. Step 3: Cross multiply
    1,126.19x = 1,690.07 × 395.82
  4. Step 4: Simplify right side
    1,126.19x = 668,961.53
  5. Step 5: Solve for x
    x = 668,961.53/1,126.19
  6. Step 6: Final answer
    x = 594.01

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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.