Home / 3,915.15-5,872.73-1,319.91

Finding the Fourth Proportional to 3,915.15, 5,872.73 and 1,319.91

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Solution

The fourth proportional to 3,915.15, 5,872.73 and 1,319.91 is: 1,979.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.15 : 5,872.73 = 1,319.91 : x
  2. Step 2: Convert to fraction form
    3,915.15/5,872.73 = 1,319.91/x
  3. Step 3: Cross multiply
    3,915.15x = 5,872.73 × 1,319.91
  4. Step 4: Simplify right side
    3,915.15x = 7,751,468.45
  5. Step 5: Solve for x
    x = 7,751,468.45/3,915.15
  6. Step 6: Final answer
    x = 1,979.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.