Home / 1,635.84-2,453.76-1,121.28

Finding the Fourth Proportional to 1,635.84, 2,453.76 and 1,121.28

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Solution

The fourth proportional to 1,635.84, 2,453.76 and 1,121.28 is: 1,681.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.84 : 2,453.76 = 1,121.28 : x
  2. Step 2: Convert to fraction form
    1,635.84/2,453.76 = 1,121.28/x
  3. Step 3: Cross multiply
    1,635.84x = 2,453.76 × 1,121.28
  4. Step 4: Simplify right side
    1,635.84x = 2,751,352.01
  5. Step 5: Solve for x
    x = 2,751,352.01/1,635.84
  6. Step 6: Final answer
    x = 1,681.92

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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.