Home / 1,890.15-2,829.75-1,157.49

Finding the Fourth Proportional to 1,890.15, 2,829.75 and 1,157.49

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Solution

The fourth proportional to 1,890.15, 2,829.75 and 1,157.49 is: 1,732.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.15 : 2,829.75 = 1,157.49 : x
  2. Step 2: Convert to fraction form
    1,890.15/2,829.75 = 1,157.49/x
  3. Step 3: Cross multiply
    1,890.15x = 2,829.75 × 1,157.49
  4. Step 4: Simplify right side
    1,890.15x = 3,275,407.33
  5. Step 5: Solve for x
    x = 3,275,407.33/1,890.15
  6. Step 6: Final answer
    x = 1,732.88

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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.