Home / 5,438.28-8,158.80-2,661.18

Finding the Fourth Proportional to 5,438.28, 8,158.80 and 2,661.18

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Solution

The fourth proportional to 5,438.28, 8,158.80 and 2,661.18 is: 3,992.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.28 : 8,158.80 = 2,661.18 : x
  2. Step 2: Convert to fraction form
    5,438.28/8,158.80 = 2,661.18/x
  3. Step 3: Cross multiply
    5,438.28x = 8,158.80 × 2,661.18
  4. Step 4: Simplify right side
    5,438.28x = 21,712,035.38
  5. Step 5: Solve for x
    x = 21,712,035.38/5,438.28
  6. Step 6: Final answer
    x = 3,992.45

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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.