Home / 5,439.66-8,151.86-2,315.44

Finding the Fourth Proportional to 5,439.66, 8,151.86 and 2,315.44

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Solution

The fourth proportional to 5,439.66, 8,151.86 and 2,315.44 is: 3,469.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.66 : 8,151.86 = 2,315.44 : x
  2. Step 2: Convert to fraction form
    5,439.66/8,151.86 = 2,315.44/x
  3. Step 3: Cross multiply
    5,439.66x = 8,151.86 × 2,315.44
  4. Step 4: Simplify right side
    5,439.66x = 18,875,142.72
  5. Step 5: Solve for x
    x = 18,875,142.72/5,439.66
  6. Step 6: Final answer
    x = 3,469.91

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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.