Home / 3,865.90-5,788.46-3,180.84

Finding the Fourth Proportional to 3,865.90, 5,788.46 and 3,180.84

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Solution

The fourth proportional to 3,865.90, 5,788.46 and 3,180.84 is: 4,762.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.90 : 5,788.46 = 3,180.84 : x
  2. Step 2: Convert to fraction form
    3,865.90/5,788.46 = 3,180.84/x
  3. Step 3: Cross multiply
    3,865.90x = 5,788.46 × 3,180.84
  4. Step 4: Simplify right side
    3,865.90x = 18,412,165.11
  5. Step 5: Solve for x
    x = 18,412,165.11/3,865.90
  6. Step 6: Final answer
    x = 4,762.71

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1.5x scale

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.