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Finding the Fourth Proportional to 8,671.11, 13,009.28 and 3,670.92

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Solution

The fourth proportional to 8,671.11, 13,009.28 and 3,670.92 is: 5,507.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.11 : 13,009.28 = 3,670.92 : x
  2. Step 2: Convert to fraction form
    8,671.11/13,009.28 = 3,670.92/x
  3. Step 3: Cross multiply
    8,671.11x = 13,009.28 × 3,670.92
  4. Step 4: Simplify right side
    8,671.11x = 47,756,026.14
  5. Step 5: Solve for x
    x = 47,756,026.14/8,671.11
  6. Step 6: Final answer
    x = 5,507.49

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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.