Home / 3,951.80-5,453.58-2,159.35

Finding the Fourth Proportional to 3,951.80, 5,453.58 and 2,159.35

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Solution

The fourth proportional to 3,951.80, 5,453.58 and 2,159.35 is: 2,979.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951.80 : 5,453.58 = 2,159.35 : x
  2. Step 2: Convert to fraction form
    3,951.80/5,453.58 = 2,159.35/x
  3. Step 3: Cross multiply
    3,951.80x = 5,453.58 × 2,159.35
  4. Step 4: Simplify right side
    3,951.80x = 11,776,174.34
  5. Step 5: Solve for x
    x = 11,776,174.34/3,951.80
  6. Step 6: Final answer
    x = 2,979.96

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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.