Home / 3,545.82-5,321.46-2,457.78

Finding the Fourth Proportional to 3,545.82, 5,321.46 and 2,457.78

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Solution

The fourth proportional to 3,545.82, 5,321.46 and 2,457.78 is: 3,688.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,545.82 : 5,321.46 = 2,457.78 : x
  2. Step 2: Convert to fraction form
    3,545.82/5,321.46 = 2,457.78/x
  3. Step 3: Cross multiply
    3,545.82x = 5,321.46 × 2,457.78
  4. Step 4: Simplify right side
    3,545.82x = 13,078,977.96
  5. Step 5: Solve for x
    x = 13,078,977.96/3,545.82
  6. Step 6: Final answer
    x = 3,688.56

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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.