Home / 3,176.21-4,384.67-2,115.74

Finding the Fourth Proportional to 3,176.21, 4,384.67 and 2,115.74

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Solution

The fourth proportional to 3,176.21, 4,384.67 and 2,115.74 is: 2,920.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,176.21 : 4,384.67 = 2,115.74 : x
  2. Step 2: Convert to fraction form
    3,176.21/4,384.67 = 2,115.74/x
  3. Step 3: Cross multiply
    3,176.21x = 4,384.67 × 2,115.74
  4. Step 4: Simplify right side
    3,176.21x = 9,276,789.20
  5. Step 5: Solve for x
    x = 9,276,789.20/3,176.21
  6. Step 6: Final answer
    x = 2,920.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.