Home / 3,717.55-5,129.84-2,146.15

Finding the Fourth Proportional to 3,717.55, 5,129.84 and 2,146.15

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Solution

The fourth proportional to 3,717.55, 5,129.84 and 2,146.15 is: 2,961.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,717.55 : 5,129.84 = 2,146.15 : x
  2. Step 2: Convert to fraction form
    3,717.55/5,129.84 = 2,146.15/x
  3. Step 3: Cross multiply
    3,717.55x = 5,129.84 × 2,146.15
  4. Step 4: Simplify right side
    3,717.55x = 11,009,380.47
  5. Step 5: Solve for x
    x = 11,009,380.47/3,717.55
  6. Step 6: Final answer
    x = 2,961.47

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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.