Home / 3,438.12-5,157.18-1,976.34

Finding the Fourth Proportional to 3,438.12, 5,157.18 and 1,976.34

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Solution

The fourth proportional to 3,438.12, 5,157.18 and 1,976.34 is: 2,964.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.12 : 5,157.18 = 1,976.34 : x
  2. Step 2: Convert to fraction form
    3,438.12/5,157.18 = 1,976.34/x
  3. Step 3: Cross multiply
    3,438.12x = 5,157.18 × 1,976.34
  4. Step 4: Simplify right side
    3,438.12x = 10,192,341.12
  5. Step 5: Solve for x
    x = 10,192,341.12/3,438.12
  6. Step 6: Final answer
    x = 2,964.51

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.