Home / 3,948.80-5,450.56-2,770.16

Finding the Fourth Proportional to 3,948.80, 5,450.56 and 2,770.16

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Solution

The fourth proportional to 3,948.80, 5,450.56 and 2,770.16 is: 3,823.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.80 : 5,450.56 = 2,770.16 : x
  2. Step 2: Convert to fraction form
    3,948.80/5,450.56 = 2,770.16/x
  3. Step 3: Cross multiply
    3,948.80x = 5,450.56 × 2,770.16
  4. Step 4: Simplify right side
    3,948.80x = 15,098,923.29
  5. Step 5: Solve for x
    x = 15,098,923.29/3,948.80
  6. Step 6: Final answer
    x = 3,823.67

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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.