Home / 1,864.34-2,571.76-1,190.90

Finding the Fourth Proportional to 1,864.34, 2,571.76 and 1,190.90

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Solution

The fourth proportional to 1,864.34, 2,571.76 and 1,190.90 is: 1,642.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.34 : 2,571.76 = 1,190.90 : x
  2. Step 2: Convert to fraction form
    1,864.34/2,571.76 = 1,190.90/x
  3. Step 3: Cross multiply
    1,864.34x = 2,571.76 × 1,190.90
  4. Step 4: Simplify right side
    1,864.34x = 3,062,708.98
  5. Step 5: Solve for x
    x = 3,062,708.98/1,864.34
  6. Step 6: Final answer
    x = 1,642.78

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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.