Home / 1,917.98-2,646.68-1,131.88

Finding the Fourth Proportional to 1,917.98, 2,646.68 and 1,131.88

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Solution

The fourth proportional to 1,917.98, 2,646.68 and 1,131.88 is: 1,561.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.98 : 2,646.68 = 1,131.88 : x
  2. Step 2: Convert to fraction form
    1,917.98/2,646.68 = 1,131.88/x
  3. Step 3: Cross multiply
    1,917.98x = 2,646.68 × 1,131.88
  4. Step 4: Simplify right side
    1,917.98x = 2,995,705.27
  5. Step 5: Solve for x
    x = 2,995,705.27/1,917.98
  6. Step 6: Final answer
    x = 1,561.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.