Home / 1,917.56-2,878.68-1,262.36

Finding the Fourth Proportional to 1,917.56, 2,878.68 and 1,262.36

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Solution

The fourth proportional to 1,917.56, 2,878.68 and 1,262.36 is: 1,895.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.56 : 2,878.68 = 1,262.36 : x
  2. Step 2: Convert to fraction form
    1,917.56/2,878.68 = 1,262.36/x
  3. Step 3: Cross multiply
    1,917.56x = 2,878.68 × 1,262.36
  4. Step 4: Simplify right side
    1,917.56x = 3,633,930.48
  5. Step 5: Solve for x
    x = 3,633,930.48/1,917.56
  6. Step 6: Final answer
    x = 1,895.08

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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.