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Finding the Fourth Proportional to 3,058.80, 4,221.04 and 1,661.52

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Solution

The fourth proportional to 3,058.80, 4,221.04 and 1,661.52 is: 2,292.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,058.80 : 4,221.04 = 1,661.52 : x
  2. Step 2: Convert to fraction form
    3,058.80/4,221.04 = 1,661.52/x
  3. Step 3: Cross multiply
    3,058.80x = 4,221.04 × 1,661.52
  4. Step 4: Simplify right side
    3,058.80x = 7,013,342.38
  5. Step 5: Solve for x
    x = 7,013,342.38/3,058.80
  6. Step 6: Final answer
    x = 2,292.84

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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.