Home / 2,117.91-3,176.83-868.24

Finding the Fourth Proportional to 2,117.91, 3,176.83 and 868.24

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Solution

The fourth proportional to 2,117.91, 3,176.83 and 868.24 is: 1,302.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.91 : 3,176.83 = 868.24 : x
  2. Step 2: Convert to fraction form
    2,117.91/3,176.83 = 868.24/x
  3. Step 3: Cross multiply
    2,117.91x = 3,176.83 × 868.24
  4. Step 4: Simplify right side
    2,117.91x = 2,758,240.77
  5. Step 5: Solve for x
    x = 2,758,240.77/2,117.91
  6. Step 6: Final answer
    x = 1,302.34

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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.