Home / 1,911.45-2,863.52-1,292.12

Finding the Fourth Proportional to 1,911.45, 2,863.52 and 1,292.12

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Solution

The fourth proportional to 1,911.45, 2,863.52 and 1,292.12 is: 1,935.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.45 : 2,863.52 = 1,292.12 : x
  2. Step 2: Convert to fraction form
    1,911.45/2,863.52 = 1,292.12/x
  3. Step 3: Cross multiply
    1,911.45x = 2,863.52 × 1,292.12
  4. Step 4: Simplify right side
    1,911.45x = 3,699,995.53
  5. Step 5: Solve for x
    x = 3,699,995.53/1,911.45
  6. Step 6: Final answer
    x = 1,935.70

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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.