Home / 5,390.40-8,082.28-2,099.66

Finding the Fourth Proportional to 5,390.40, 8,082.28 and 2,099.66

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Solution

The fourth proportional to 5,390.40, 8,082.28 and 2,099.66 is: 3,148.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.40 : 8,082.28 = 2,099.66 : x
  2. Step 2: Convert to fraction form
    5,390.40/8,082.28 = 2,099.66/x
  3. Step 3: Cross multiply
    5,390.40x = 8,082.28 × 2,099.66
  4. Step 4: Simplify right side
    5,390.40x = 16,970,040.02
  5. Step 5: Solve for x
    x = 16,970,040.02/5,390.40
  6. Step 6: Final answer
    x = 3,148.20

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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.