Home / 3,387.96-4,640.36-3,188.70

Finding the Fourth Proportional to 3,387.96, 4,640.36 and 3,188.70

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Solution

The fourth proportional to 3,387.96, 4,640.36 and 3,188.70 is: 4,367.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.96 : 4,640.36 = 3,188.70 : x
  2. Step 2: Convert to fraction form
    3,387.96/4,640.36 = 3,188.70/x
  3. Step 3: Cross multiply
    3,387.96x = 4,640.36 × 3,188.70
  4. Step 4: Simplify right side
    3,387.96x = 14,796,699.99
  5. Step 5: Solve for x
    x = 14,796,699.99/3,387.96
  6. Step 6: Final answer
    x = 4,367.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.