Home / 2,865.91-3,954.35-1,872.65

Finding the Fourth Proportional to 2,865.91, 3,954.35 and 1,872.65

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Solution

The fourth proportional to 2,865.91, 3,954.35 and 1,872.65 is: 2,583.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.91 : 3,954.35 = 1,872.65 : x
  2. Step 2: Convert to fraction form
    2,865.91/3,954.35 = 1,872.65/x
  3. Step 3: Cross multiply
    2,865.91x = 3,954.35 × 1,872.65
  4. Step 4: Simplify right side
    2,865.91x = 7,405,108.32
  5. Step 5: Solve for x
    x = 7,405,108.32/2,865.91
  6. Step 6: Final answer
    x = 2,583.86

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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.