Home / 5,111.08-7,052.80-2,872.44

Finding the Fourth Proportional to 5,111.08, 7,052.80 and 2,872.44

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Solution

The fourth proportional to 5,111.08, 7,052.80 and 2,872.44 is: 3,963.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.08 : 7,052.80 = 2,872.44 : x
  2. Step 2: Convert to fraction form
    5,111.08/7,052.80 = 2,872.44/x
  3. Step 3: Cross multiply
    5,111.08x = 7,052.80 × 2,872.44
  4. Step 4: Simplify right side
    5,111.08x = 20,258,744.83
  5. Step 5: Solve for x
    x = 20,258,744.83/5,111.08
  6. Step 6: Final answer
    x = 3,963.69

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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.