Home / 3,240-4,471.04-1,914.12

Finding the Fourth Proportional to 3,240, 4,471.04 and 1,914.12

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Solution

The fourth proportional to 3,240, 4,471.04 and 1,914.12 is: 2,641.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240 : 4,471.04 = 1,914.12 : x
  2. Step 2: Convert to fraction form
    3,240/4,471.04 = 1,914.12/x
  3. Step 3: Cross multiply
    3,240x = 4,471.04 × 1,914.12
  4. Step 4: Simplify right side
    3,240x = 8,558,107.08
  5. Step 5: Solve for x
    x = 8,558,107.08/3,240
  6. Step 6: Final answer
    x = 2,641.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.