Home / 3,847.60-5,771.36-1,215.08

Finding the Fourth Proportional to 3,847.60, 5,771.36 and 1,215.08

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Solution

The fourth proportional to 3,847.60, 5,771.36 and 1,215.08 is: 1,822.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.60 : 5,771.36 = 1,215.08 : x
  2. Step 2: Convert to fraction form
    3,847.60/5,771.36 = 1,215.08/x
  3. Step 3: Cross multiply
    3,847.60x = 5,771.36 × 1,215.08
  4. Step 4: Simplify right side
    3,847.60x = 7,012,664.11
  5. Step 5: Solve for x
    x = 7,012,664.11/3,847.60
  6. Step 6: Final answer
    x = 1,822.61

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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.