Home / 7,438.12-11,157.15-1,891.54

Finding the Fourth Proportional to 7,438.12, 11,157.15 and 1,891.54

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Solution

The fourth proportional to 7,438.12, 11,157.15 and 1,891.54 is: 2,837.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,438.12 : 11,157.15 = 1,891.54 : x
  2. Step 2: Convert to fraction form
    7,438.12/11,157.15 = 1,891.54/x
  3. Step 3: Cross multiply
    7,438.12x = 11,157.15 × 1,891.54
  4. Step 4: Simplify right side
    7,438.12x = 21,104,202.36
  5. Step 5: Solve for x
    x = 21,104,202.36/7,438.12
  6. Step 6: Final answer
    x = 2,837.30

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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.