Home / 5,406.28-8,118.70-2,945.90

Finding the Fourth Proportional to 5,406.28, 8,118.70 and 2,945.90

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Solution

The fourth proportional to 5,406.28, 8,118.70 and 2,945.90 is: 4,423.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,406.28 : 8,118.70 = 2,945.90 : x
  2. Step 2: Convert to fraction form
    5,406.28/8,118.70 = 2,945.90/x
  3. Step 3: Cross multiply
    5,406.28x = 8,118.70 × 2,945.90
  4. Step 4: Simplify right side
    5,406.28x = 23,916,891.26
  5. Step 5: Solve for x
    x = 23,916,891.26/5,406.28
  6. Step 6: Final answer
    x = 4,423.91

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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.