Home / 3,207.20-4,802.70-2,105.60

Finding the Fourth Proportional to 3,207.20, 4,802.70 and 2,105.60

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Solution

The fourth proportional to 3,207.20, 4,802.70 and 2,105.60 is: 3,153.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,207.20 : 4,802.70 = 2,105.60 : x
  2. Step 2: Convert to fraction form
    3,207.20/4,802.70 = 2,105.60/x
  3. Step 3: Cross multiply
    3,207.20x = 4,802.70 × 2,105.60
  4. Step 4: Simplify right side
    3,207.20x = 10,112,565.12
  5. Step 5: Solve for x
    x = 10,112,565.12/3,207.20
  6. Step 6: Final answer
    x = 3,153.08

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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.