Home / 2,331.91-3,495.72-2,128.99

Finding the Fourth Proportional to 2,331.91, 3,495.72 and 2,128.99

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Solution

The fourth proportional to 2,331.91, 3,495.72 and 2,128.99 is: 3,191.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,331.91 : 3,495.72 = 2,128.99 : x
  2. Step 2: Convert to fraction form
    2,331.91/3,495.72 = 2,128.99/x
  3. Step 3: Cross multiply
    2,331.91x = 3,495.72 × 2,128.99
  4. Step 4: Simplify right side
    2,331.91x = 7,442,352.92
  5. Step 5: Solve for x
    x = 7,442,352.92/2,331.91
  6. Step 6: Final answer
    x = 3,191.53

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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.