Home / 2,221.42-3,068.67-1,603.66

Finding the Fourth Proportional to 2,221.42, 3,068.67 and 1,603.66

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Solution

The fourth proportional to 2,221.42, 3,068.67 and 1,603.66 is: 2,215.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.42 : 3,068.67 = 1,603.66 : x
  2. Step 2: Convert to fraction form
    2,221.42/3,068.67 = 1,603.66/x
  3. Step 3: Cross multiply
    2,221.42x = 3,068.67 × 1,603.66
  4. Step 4: Simplify right side
    2,221.42x = 4,921,103.33
  5. Step 5: Solve for x
    x = 4,921,103.33/2,221.42
  6. Step 6: Final answer
    x = 2,215.30

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1.5x scale

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.