Home / 3,968.85-5,476.80-2,290.16

Finding the Fourth Proportional to 3,968.85, 5,476.80 and 2,290.16

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Solution

The fourth proportional to 3,968.85, 5,476.80 and 2,290.16 is: 3,160.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.85 : 5,476.80 = 2,290.16 : x
  2. Step 2: Convert to fraction form
    3,968.85/5,476.80 = 2,290.16/x
  3. Step 3: Cross multiply
    3,968.85x = 5,476.80 × 2,290.16
  4. Step 4: Simplify right side
    3,968.85x = 12,542,748.29
  5. Step 5: Solve for x
    x = 12,542,748.29/3,968.85
  6. Step 6: Final answer
    x = 3,160.30

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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.