Home / 3,317.40-4,576.14-1,990.35

Finding the Fourth Proportional to 3,317.40, 4,576.14 and 1,990.35

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Solution

The fourth proportional to 3,317.40, 4,576.14 and 1,990.35 is: 2,745.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,317.40 : 4,576.14 = 1,990.35 : x
  2. Step 2: Convert to fraction form
    3,317.40/4,576.14 = 1,990.35/x
  3. Step 3: Cross multiply
    3,317.40x = 4,576.14 × 1,990.35
  4. Step 4: Simplify right side
    3,317.40x = 9,108,120.25
  5. Step 5: Solve for x
    x = 9,108,120.25/3,317.40
  6. Step 6: Final answer
    x = 2,745.56

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1.5x scale

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.