Home / 3,967.80-5,475.72-2,199.60

Finding the Fourth Proportional to 3,967.80, 5,475.72 and 2,199.60

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Solution

The fourth proportional to 3,967.80, 5,475.72 and 2,199.60 is: 3,035.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,967.80 : 5,475.72 = 2,199.60 : x
  2. Step 2: Convert to fraction form
    3,967.80/5,475.72 = 2,199.60/x
  3. Step 3: Cross multiply
    3,967.80x = 5,475.72 × 2,199.60
  4. Step 4: Simplify right side
    3,967.80x = 12,044,393.71
  5. Step 5: Solve for x
    x = 12,044,393.71/3,967.80
  6. Step 6: Final answer
    x = 3,035.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.