Home / 2,885.05-3,981.79-1,765.80

Finding the Fourth Proportional to 2,885.05, 3,981.79 and 1,765.80

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Solution

The fourth proportional to 2,885.05, 3,981.79 and 1,765.80 is: 2,437.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.05 : 3,981.79 = 1,765.80 : x
  2. Step 2: Convert to fraction form
    2,885.05/3,981.79 = 1,765.80/x
  3. Step 3: Cross multiply
    2,885.05x = 3,981.79 × 1,765.80
  4. Step 4: Simplify right side
    2,885.05x = 7,031,046.99
  5. Step 5: Solve for x
    x = 7,031,046.99/2,885.05
  6. Step 6: Final answer
    x = 2,437.06

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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.