Home / 5,920.10-8,872.05-3,940.10

Finding the Fourth Proportional to 5,920.10, 8,872.05 and 3,940.10

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Solution

The fourth proportional to 5,920.10, 8,872.05 and 3,940.10 is: 5,904.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,920.10 : 8,872.05 = 3,940.10 : x
  2. Step 2: Convert to fraction form
    5,920.10/8,872.05 = 3,940.10/x
  3. Step 3: Cross multiply
    5,920.10x = 8,872.05 × 3,940.10
  4. Step 4: Simplify right side
    5,920.10x = 34,956,764.21
  5. Step 5: Solve for x
    x = 34,956,764.21/5,920.10
  6. Step 6: Final answer
    x = 5,904.76

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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.