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Finding the Fourth Proportional to 8,992.71, 13,480.56 and 3,145.55

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Solution

The fourth proportional to 8,992.71, 13,480.56 and 3,145.55 is: 4,715.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,992.71 : 13,480.56 = 3,145.55 : x
  2. Step 2: Convert to fraction form
    8,992.71/13,480.56 = 3,145.55/x
  3. Step 3: Cross multiply
    8,992.71x = 13,480.56 × 3,145.55
  4. Step 4: Simplify right side
    8,992.71x = 42,403,708.11
  5. Step 5: Solve for x
    x = 42,403,708.11/8,992.71
  6. Step 6: Final answer
    x = 4,715.34

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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.