Home / 2,871.40-3,961.56-1,824.07

Finding the Fourth Proportional to 2,871.40, 3,961.56 and 1,824.07

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Solution

The fourth proportional to 2,871.40, 3,961.56 and 1,824.07 is: 2,516.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.40 : 3,961.56 = 1,824.07 : x
  2. Step 2: Convert to fraction form
    2,871.40/3,961.56 = 1,824.07/x
  3. Step 3: Cross multiply
    2,871.40x = 3,961.56 × 1,824.07
  4. Step 4: Simplify right side
    2,871.40x = 7,226,162.75
  5. Step 5: Solve for x
    x = 7,226,162.75/2,871.40
  6. Step 6: Final answer
    x = 2,516.60

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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.