Home / 3,317.42-4,576.12-1,990.36

Finding the Fourth Proportional to 3,317.42, 4,576.12 and 1,990.36

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Solution

The fourth proportional to 3,317.42, 4,576.12 and 1,990.36 is: 2,745.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,317.42 : 4,576.12 = 1,990.36 : x
  2. Step 2: Convert to fraction form
    3,317.42/4,576.12 = 1,990.36/x
  3. Step 3: Cross multiply
    3,317.42x = 4,576.12 × 1,990.36
  4. Step 4: Simplify right side
    3,317.42x = 9,108,126.20
  5. Step 5: Solve for x
    x = 9,108,126.20/3,317.42
  6. Step 6: Final answer
    x = 2,745.55

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Double scale
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Similar ratio
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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.