Home / 3,965.81-5,475.15-2,770.25

Finding the Fourth Proportional to 3,965.81, 5,475.15 and 2,770.25

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Solution

The fourth proportional to 3,965.81, 5,475.15 and 2,770.25 is: 3,824.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.81 : 5,475.15 = 2,770.25 : x
  2. Step 2: Convert to fraction form
    3,965.81/5,475.15 = 2,770.25/x
  3. Step 3: Cross multiply
    3,965.81x = 5,475.15 × 2,770.25
  4. Step 4: Simplify right side
    3,965.81x = 15,167,506.91
  5. Step 5: Solve for x
    x = 15,167,506.91/3,965.81
  6. Step 6: Final answer
    x = 3,824.57

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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.