Home / 1,635.29-2,447.47-1,342.78

Finding the Fourth Proportional to 1,635.29, 2,447.47 and 1,342.78

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Solution

The fourth proportional to 1,635.29, 2,447.47 and 1,342.78 is: 2,009.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.29 : 2,447.47 = 1,342.78 : x
  2. Step 2: Convert to fraction form
    1,635.29/2,447.47 = 1,342.78/x
  3. Step 3: Cross multiply
    1,635.29x = 2,447.47 × 1,342.78
  4. Step 4: Simplify right side
    1,635.29x = 3,286,401.77
  5. Step 5: Solve for x
    x = 3,286,401.77/1,635.29
  6. Step 6: Final answer
    x = 2,009.68

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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.