Home / 3,890.15-5,833.47-1,116.20

Finding the Fourth Proportional to 3,890.15, 5,833.47 and 1,116.20

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Solution

The fourth proportional to 3,890.15, 5,833.47 and 1,116.20 is: 1,673.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.15 : 5,833.47 = 1,116.20 : x
  2. Step 2: Convert to fraction form
    3,890.15/5,833.47 = 1,116.20/x
  3. Step 3: Cross multiply
    3,890.15x = 5,833.47 × 1,116.20
  4. Step 4: Simplify right side
    3,890.15x = 6,511,290.05
  5. Step 5: Solve for x
    x = 6,511,290.05/3,890.15
  6. Step 6: Final answer
    x = 1,673.79

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1.5x scale

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.