Home / 2,315.76-3,176.72-2,190.22

Finding the Fourth Proportional to 2,315.76, 3,176.72 and 2,190.22

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Solution

The fourth proportional to 2,315.76, 3,176.72 and 2,190.22 is: 3,004.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.76 : 3,176.72 = 2,190.22 : x
  2. Step 2: Convert to fraction form
    2,315.76/3,176.72 = 2,190.22/x
  3. Step 3: Cross multiply
    2,315.76x = 3,176.72 × 2,190.22
  4. Step 4: Simplify right side
    2,315.76x = 6,957,715.68
  5. Step 5: Solve for x
    x = 6,957,715.68/2,315.76
  6. Step 6: Final answer
    x = 3,004.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.