Home / 5,625.72-7,761.96-3,857.76

Finding the Fourth Proportional to 5,625.72, 7,761.96 and 3,857.76

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Solution

The fourth proportional to 5,625.72, 7,761.96 and 3,857.76 is: 5,322.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,625.72 : 7,761.96 = 3,857.76 : x
  2. Step 2: Convert to fraction form
    5,625.72/7,761.96 = 3,857.76/x
  3. Step 3: Cross multiply
    5,625.72x = 7,761.96 × 3,857.76
  4. Step 4: Simplify right side
    5,625.72x = 29,943,778.81
  5. Step 5: Solve for x
    x = 29,943,778.81/5,625.72
  6. Step 6: Final answer
    x = 5,322.66

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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.