Home / 3,931.62-5,890.47-2,078.62

Finding the Fourth Proportional to 3,931.62, 5,890.47 and 2,078.62

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Solution

The fourth proportional to 3,931.62, 5,890.47 and 2,078.62 is: 3,114.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.62 : 5,890.47 = 2,078.62 : x
  2. Step 2: Convert to fraction form
    3,931.62/5,890.47 = 2,078.62/x
  3. Step 3: Cross multiply
    3,931.62x = 5,890.47 × 2,078.62
  4. Step 4: Simplify right side
    3,931.62x = 12,244,048.75
  5. Step 5: Solve for x
    x = 12,244,048.75/3,931.62
  6. Step 6: Final answer
    x = 3,114.25

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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.