Home / 5,438.79-8,156.91-2,662.65

Finding the Fourth Proportional to 5,438.79, 8,156.91 and 2,662.65

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Solution

The fourth proportional to 5,438.79, 8,156.91 and 2,662.65 is: 3,993.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.79 : 8,156.91 = 2,662.65 : x
  2. Step 2: Convert to fraction form
    5,438.79/8,156.91 = 2,662.65/x
  3. Step 3: Cross multiply
    5,438.79x = 8,156.91 × 2,662.65
  4. Step 4: Simplify right side
    5,438.79x = 21,718,996.41
  5. Step 5: Solve for x
    x = 21,718,996.41/5,438.79
  6. Step 6: Final answer
    x = 3,993.35

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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.