Home / 3,890.40-5,856.62-3,545.96

Finding the Fourth Proportional to 3,890.40, 5,856.62 and 3,545.96

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Solution

The fourth proportional to 3,890.40, 5,856.62 and 3,545.96 is: 5,338.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.40 : 5,856.62 = 3,545.96 : x
  2. Step 2: Convert to fraction form
    3,890.40/5,856.62 = 3,545.96/x
  3. Step 3: Cross multiply
    3,890.40x = 5,856.62 × 3,545.96
  4. Step 4: Simplify right side
    3,890.40x = 20,767,293.24
  5. Step 5: Solve for x
    x = 20,767,293.24/3,890.40
  6. Step 6: Final answer
    x = 5,338.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.