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Finding the Fourth Proportional to 11,508.77, 17,264.14 and 3,188.79

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Solution

The fourth proportional to 11,508.77, 17,264.14 and 3,188.79 is: 4,783.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,508.77 : 17,264.14 = 3,188.79 : x
  2. Step 2: Convert to fraction form
    11,508.77/17,264.14 = 3,188.79/x
  3. Step 3: Cross multiply
    11,508.77x = 17,264.14 × 3,188.79
  4. Step 4: Simplify right side
    11,508.77x = 55,051,709.02
  5. Step 5: Solve for x
    x = 55,051,709.02/11,508.77
  6. Step 6: Final answer
    x = 4,783.46

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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.