Home / 5,638.39-8,455.17-1,940.99

Finding the Fourth Proportional to 5,638.39, 8,455.17 and 1,940.99

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Solution

The fourth proportional to 5,638.39, 8,455.17 and 1,940.99 is: 2,910.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.39 : 8,455.17 = 1,940.99 : x
  2. Step 2: Convert to fraction form
    5,638.39/8,455.17 = 1,940.99/x
  3. Step 3: Cross multiply
    5,638.39x = 8,455.17 × 1,940.99
  4. Step 4: Simplify right side
    5,638.39x = 16,411,400.42
  5. Step 5: Solve for x
    x = 16,411,400.42/5,638.39
  6. Step 6: Final answer
    x = 2,910.65

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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.