Home / 1,761.62-2,430.73-1,131.95

Finding the Fourth Proportional to 1,761.62, 2,430.73 and 1,131.95

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Solution

The fourth proportional to 1,761.62, 2,430.73 and 1,131.95 is: 1,561.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.62 : 2,430.73 = 1,131.95 : x
  2. Step 2: Convert to fraction form
    1,761.62/2,430.73 = 1,131.95/x
  3. Step 3: Cross multiply
    1,761.62x = 2,430.73 × 1,131.95
  4. Step 4: Simplify right side
    1,761.62x = 2,751,464.82
  5. Step 5: Solve for x
    x = 2,751,464.82/1,761.62
  6. Step 6: Final answer
    x = 1,561.89

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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.