Home / 5,145.76-7,718.63-2,371.61

Finding the Fourth Proportional to 5,145.76, 7,718.63 and 2,371.61

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Solution

The fourth proportional to 5,145.76, 7,718.63 and 2,371.61 is: 3,557.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.76 : 7,718.63 = 2,371.61 : x
  2. Step 2: Convert to fraction form
    5,145.76/7,718.63 = 2,371.61/x
  3. Step 3: Cross multiply
    5,145.76x = 7,718.63 × 2,371.61
  4. Step 4: Simplify right side
    5,145.76x = 18,305,580.09
  5. Step 5: Solve for x
    x = 18,305,580.09/5,145.76
  6. Step 6: Final answer
    x = 3,557.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.