Home / 3,209.76-4,802.49-2,115.45

Finding the Fourth Proportional to 3,209.76, 4,802.49 and 2,115.45

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Solution

The fourth proportional to 3,209.76, 4,802.49 and 2,115.45 is: 3,165.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.76 : 4,802.49 = 2,115.45 : x
  2. Step 2: Convert to fraction form
    3,209.76/4,802.49 = 2,115.45/x
  3. Step 3: Cross multiply
    3,209.76x = 4,802.49 × 2,115.45
  4. Step 4: Simplify right side
    3,209.76x = 10,159,427.47
  5. Step 5: Solve for x
    x = 10,159,427.47/3,209.76
  6. Step 6: Final answer
    x = 3,165.17

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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.