Home / 3,208.12-4,812.30-1,983.40

Finding the Fourth Proportional to 3,208.12, 4,812.30 and 1,983.40

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Solution

The fourth proportional to 3,208.12, 4,812.30 and 1,983.40 is: 2,975.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.12 : 4,812.30 = 1,983.40 : x
  2. Step 2: Convert to fraction form
    3,208.12/4,812.30 = 1,983.40/x
  3. Step 3: Cross multiply
    3,208.12x = 4,812.30 × 1,983.40
  4. Step 4: Simplify right side
    3,208.12x = 9,544,715.82
  5. Step 5: Solve for x
    x = 9,544,715.82/3,208.12
  6. Step 6: Final answer
    x = 2,975.17

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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.