Home / 5,401.38-8,102.81-1,890.87

Finding the Fourth Proportional to 5,401.38, 8,102.81 and 1,890.87

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Solution

The fourth proportional to 5,401.38, 8,102.81 and 1,890.87 is: 2,836.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,401.38 : 8,102.81 = 1,890.87 : x
  2. Step 2: Convert to fraction form
    5,401.38/8,102.81 = 1,890.87/x
  3. Step 3: Cross multiply
    5,401.38x = 8,102.81 × 1,890.87
  4. Step 4: Simplify right side
    5,401.38x = 15,321,360.34
  5. Step 5: Solve for x
    x = 15,321,360.34/5,401.38
  6. Step 6: Final answer
    x = 2,836.56

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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.