Home / 4,120.10-5,685.90-2,351.72

Finding the Fourth Proportional to 4,120.10, 5,685.90 and 2,351.72

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Solution

The fourth proportional to 4,120.10, 5,685.90 and 2,351.72 is: 3,245.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.10 : 5,685.90 = 2,351.72 : x
  2. Step 2: Convert to fraction form
    4,120.10/5,685.90 = 2,351.72/x
  3. Step 3: Cross multiply
    4,120.10x = 5,685.90 × 2,351.72
  4. Step 4: Simplify right side
    4,120.10x = 13,371,644.75
  5. Step 5: Solve for x
    x = 13,371,644.75/4,120.10
  6. Step 6: Final answer
    x = 3,245.47

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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.