Home / 1,911.36-2,862.17-1,260.12

Finding the Fourth Proportional to 1,911.36, 2,862.17 and 1,260.12

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Solution

The fourth proportional to 1,911.36, 2,862.17 and 1,260.12 is: 1,886.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.36 : 2,862.17 = 1,260.12 : x
  2. Step 2: Convert to fraction form
    1,911.36/2,862.17 = 1,260.12/x
  3. Step 3: Cross multiply
    1,911.36x = 2,862.17 × 1,260.12
  4. Step 4: Simplify right side
    1,911.36x = 3,606,677.66
  5. Step 5: Solve for x
    x = 3,606,677.66/1,911.36
  6. Step 6: Final answer
    x = 1,886.97

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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.