Home / 5,109.75-7,051.40-2,872.01

Finding the Fourth Proportional to 5,109.75, 7,051.40 and 2,872.01

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Solution

The fourth proportional to 5,109.75, 7,051.40 and 2,872.01 is: 3,963.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.75 : 7,051.40 = 2,872.01 : x
  2. Step 2: Convert to fraction form
    5,109.75/7,051.40 = 2,872.01/x
  3. Step 3: Cross multiply
    5,109.75x = 7,051.40 × 2,872.01
  4. Step 4: Simplify right side
    5,109.75x = 20,251,641.70
  5. Step 5: Solve for x
    x = 20,251,641.70/5,109.75
  6. Step 6: Final answer
    x = 3,963.33

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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.