Home / 3,209.36-4,428.12-1,812.12

Finding the Fourth Proportional to 3,209.36, 4,428.12 and 1,812.12

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Solution

The fourth proportional to 3,209.36, 4,428.12 and 1,812.12 is: 2,500.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.36 : 4,428.12 = 1,812.12 : x
  2. Step 2: Convert to fraction form
    3,209.36/4,428.12 = 1,812.12/x
  3. Step 3: Cross multiply
    3,209.36x = 4,428.12 × 1,812.12
  4. Step 4: Simplify right side
    3,209.36x = 8,024,284.81
  5. Step 5: Solve for x
    x = 8,024,284.81/3,209.36
  6. Step 6: Final answer
    x = 2,500.28

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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.