Home / 1,603.10-2,211-1,229.60

Finding the Fourth Proportional to 1,603.10, 2,211 and 1,229.60

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Solution

The fourth proportional to 1,603.10, 2,211 and 1,229.60 is: 1,695.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.10 : 2,211 = 1,229.60 : x
  2. Step 2: Convert to fraction form
    1,603.10/2,211 = 1,229.60/x
  3. Step 3: Cross multiply
    1,603.10x = 2,211 × 1,229.60
  4. Step 4: Simplify right side
    1,603.10x = 2,718,645.60
  5. Step 5: Solve for x
    x = 2,718,645.60/1,603.10
  6. Step 6: Final answer
    x = 1,695.87

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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.