Home / 8,718.93-13,078.27-2,145.17

Finding the Fourth Proportional to 8,718.93, 13,078.27 and 2,145.17

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Solution

The fourth proportional to 8,718.93, 13,078.27 and 2,145.17 is: 3,217.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.93 : 13,078.27 = 2,145.17 : x
  2. Step 2: Convert to fraction form
    8,718.93/13,078.27 = 2,145.17/x
  3. Step 3: Cross multiply
    8,718.93x = 13,078.27 × 2,145.17
  4. Step 4: Simplify right side
    8,718.93x = 28,055,112.46
  5. Step 5: Solve for x
    x = 28,055,112.46/8,718.93
  6. Step 6: Final answer
    x = 3,217.72

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1.5x scale

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.