Home / 8,718.73-13,078.18-3,455.02

Finding the Fourth Proportional to 8,718.73, 13,078.18 and 3,455.02

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Solution

The fourth proportional to 8,718.73, 13,078.18 and 3,455.02 is: 5,182.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.73 : 13,078.18 = 3,455.02 : x
  2. Step 2: Convert to fraction form
    8,718.73/13,078.18 = 3,455.02/x
  3. Step 3: Cross multiply
    8,718.73x = 13,078.18 × 3,455.02
  4. Step 4: Simplify right side
    8,718.73x = 45,185,373.46
  5. Step 5: Solve for x
    x = 45,185,373.46/8,718.73
  6. Step 6: Final answer
    x = 5,182.56

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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.