Home / 1,538.55-2,307.81-1,228.95

Finding the Fourth Proportional to 1,538.55, 2,307.81 and 1,228.95

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Solution

The fourth proportional to 1,538.55, 2,307.81 and 1,228.95 is: 1,843.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.55 : 2,307.81 = 1,228.95 : x
  2. Step 2: Convert to fraction form
    1,538.55/2,307.81 = 1,228.95/x
  3. Step 3: Cross multiply
    1,538.55x = 2,307.81 × 1,228.95
  4. Step 4: Simplify right side
    1,538.55x = 2,836,183.10
  5. Step 5: Solve for x
    x = 2,836,183.10/1,538.55
  6. Step 6: Final answer
    x = 1,843.41

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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.