Home / 3,967.80-5,475.36-2,199.40

Finding the Fourth Proportional to 3,967.80, 5,475.36 and 2,199.40

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Solution

The fourth proportional to 3,967.80, 5,475.36 and 2,199.40 is: 3,035.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,967.80 : 5,475.36 = 2,199.40 : x
  2. Step 2: Convert to fraction form
    3,967.80/5,475.36 = 2,199.40/x
  3. Step 3: Cross multiply
    3,967.80x = 5,475.36 × 2,199.40
  4. Step 4: Simplify right side
    3,967.80x = 12,042,506.78
  5. Step 5: Solve for x
    x = 12,042,506.78/3,967.80
  6. Step 6: Final answer
    x = 3,035.06

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1.5x scale

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.