Home / 5,401.61-8,102.15-2,115.31

Finding the Fourth Proportional to 5,401.61, 8,102.15 and 2,115.31

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Solution

The fourth proportional to 5,401.61, 8,102.15 and 2,115.31 is: 3,172.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,401.61 : 8,102.15 = 2,115.31 : x
  2. Step 2: Convert to fraction form
    5,401.61/8,102.15 = 2,115.31/x
  3. Step 3: Cross multiply
    5,401.61x = 8,102.15 × 2,115.31
  4. Step 4: Simplify right side
    5,401.61x = 17,138,558.92
  5. Step 5: Solve for x
    x = 17,138,558.92/5,401.61
  6. Step 6: Final answer
    x = 3,172.86

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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.