Home / 8,718.47-13,083.26-3,171.28

Finding the Fourth Proportional to 8,718.47, 13,083.26 and 3,171.28

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Solution

The fourth proportional to 8,718.47, 13,083.26 and 3,171.28 is: 4,758.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.47 : 13,083.26 = 3,171.28 : x
  2. Step 2: Convert to fraction form
    8,718.47/13,083.26 = 3,171.28/x
  3. Step 3: Cross multiply
    8,718.47x = 13,083.26 × 3,171.28
  4. Step 4: Simplify right side
    8,718.47x = 41,490,599.50
  5. Step 5: Solve for x
    x = 41,490,599.50/8,718.47
  6. Step 6: Final answer
    x = 4,758.93

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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.