Home / 5,410.21-8,115.38-2,124.85

Finding the Fourth Proportional to 5,410.21, 8,115.38 and 2,124.85

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Solution

The fourth proportional to 5,410.21, 8,115.38 and 2,124.85 is: 3,187.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,410.21 : 8,115.38 = 2,124.85 : x
  2. Step 2: Convert to fraction form
    5,410.21/8,115.38 = 2,124.85/x
  3. Step 3: Cross multiply
    5,410.21x = 8,115.38 × 2,124.85
  4. Step 4: Simplify right side
    5,410.21x = 17,243,965.19
  5. Step 5: Solve for x
    x = 17,243,965.19/5,410.21
  6. Step 6: Final answer
    x = 3,187.30

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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.