Home / 3,881.79-5,360.38-2,825.62

Finding the Fourth Proportional to 3,881.79, 5,360.38 and 2,825.62

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Solution

The fourth proportional to 3,881.79, 5,360.38 and 2,825.62 is: 3,901.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.79 : 5,360.38 = 2,825.62 : x
  2. Step 2: Convert to fraction form
    3,881.79/5,360.38 = 2,825.62/x
  3. Step 3: Cross multiply
    3,881.79x = 5,360.38 × 2,825.62
  4. Step 4: Simplify right side
    3,881.79x = 15,146,376.47
  5. Step 5: Solve for x
    x = 15,146,376.47/3,881.79
  6. Step 6: Final answer
    x = 3,901.91

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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.