Home / 1,190.82-1,642.50-1,150.74

Finding the Fourth Proportional to 1,190.82, 1,642.50 and 1,150.74

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Solution

The fourth proportional to 1,190.82, 1,642.50 and 1,150.74 is: 1,587.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.82 : 1,642.50 = 1,150.74 : x
  2. Step 2: Convert to fraction form
    1,190.82/1,642.50 = 1,150.74/x
  3. Step 3: Cross multiply
    1,190.82x = 1,642.50 × 1,150.74
  4. Step 4: Simplify right side
    1,190.82x = 1,890,090.45
  5. Step 5: Solve for x
    x = 1,890,090.45/1,190.82
  6. Step 6: Final answer
    x = 1,587.22

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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.