Home / 7,438.06-11,158.53-3,979.18

Finding the Fourth Proportional to 7,438.06, 11,158.53 and 3,979.18

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Solution

The fourth proportional to 7,438.06, 11,158.53 and 3,979.18 is: 5,969.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,438.06 : 11,158.53 = 3,979.18 : x
  2. Step 2: Convert to fraction form
    7,438.06/11,158.53 = 3,979.18/x
  3. Step 3: Cross multiply
    7,438.06x = 11,158.53 × 3,979.18
  4. Step 4: Simplify right side
    7,438.06x = 44,401,799.41
  5. Step 5: Solve for x
    x = 44,401,799.41/7,438.06
  6. Step 6: Final answer
    x = 5,969.54

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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.