Home / 3,915.15-5,872.73-1,318.08

Finding the Fourth Proportional to 3,915.15, 5,872.73 and 1,318.08

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Solution

The fourth proportional to 3,915.15, 5,872.73 and 1,318.08 is: 1,977.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.15 : 5,872.73 = 1,318.08 : x
  2. Step 2: Convert to fraction form
    3,915.15/5,872.73 = 1,318.08/x
  3. Step 3: Cross multiply
    3,915.15x = 5,872.73 × 1,318.08
  4. Step 4: Simplify right side
    3,915.15x = 7,740,727.96
  5. Step 5: Solve for x
    x = 7,740,727.96/3,915.15
  6. Step 6: Final answer
    x = 1,977.12

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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.