Home / 3,209.70-4,429.32-1,812.45

Finding the Fourth Proportional to 3,209.70, 4,429.32 and 1,812.45

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Solution

The fourth proportional to 3,209.70, 4,429.32 and 1,812.45 is: 2,501.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.70 : 4,429.32 = 1,812.45 : x
  2. Step 2: Convert to fraction form
    3,209.70/4,429.32 = 1,812.45/x
  3. Step 3: Cross multiply
    3,209.70x = 4,429.32 × 1,812.45
  4. Step 4: Simplify right side
    3,209.70x = 8,027,921.03
  5. Step 5: Solve for x
    x = 8,027,921.03/3,209.70
  6. Step 6: Final answer
    x = 2,501.14

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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.