Home / 2,247.17-3,370.88-687.22

Finding the Fourth Proportional to 2,247.17, 3,370.88 and 687.22

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Solution

The fourth proportional to 2,247.17, 3,370.88 and 687.22 is: 1,030.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,247.17 : 3,370.88 = 687.22 : x
  2. Step 2: Convert to fraction form
    2,247.17/3,370.88 = 687.22/x
  3. Step 3: Cross multiply
    2,247.17x = 3,370.88 × 687.22
  4. Step 4: Simplify right side
    2,247.17x = 2,316,529.44
  5. Step 5: Solve for x
    x = 2,316,529.44/2,247.17
  6. Step 6: Final answer
    x = 1,030.87

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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.