Home / 7,421.92-11,137.02-3,959.08

Finding the Fourth Proportional to 7,421.92, 11,137.02 and 3,959.08

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Solution

The fourth proportional to 7,421.92, 11,137.02 and 3,959.08 is: 5,940.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.92 : 11,137.02 = 3,959.08 : x
  2. Step 2: Convert to fraction form
    7,421.92/11,137.02 = 3,959.08/x
  3. Step 3: Cross multiply
    7,421.92x = 11,137.02 × 3,959.08
  4. Step 4: Simplify right side
    7,421.92x = 44,092,353.14
  5. Step 5: Solve for x
    x = 44,092,353.14/7,421.92
  6. Step 6: Final answer
    x = 5,940.83

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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.