Home / 3,126.07-4,313.92-1,728.82

Finding the Fourth Proportional to 3,126.07, 4,313.92 and 1,728.82

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Solution

The fourth proportional to 3,126.07, 4,313.92 and 1,728.82 is: 2,385.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.07 : 4,313.92 = 1,728.82 : x
  2. Step 2: Convert to fraction form
    3,126.07/4,313.92 = 1,728.82/x
  3. Step 3: Cross multiply
    3,126.07x = 4,313.92 × 1,728.82
  4. Step 4: Simplify right side
    3,126.07x = 7,457,960.96
  5. Step 5: Solve for x
    x = 7,457,960.96/3,126.07
  6. Step 6: Final answer
    x = 2,385.73

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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.