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Finding the Fourth Proportional to 8,991.16, 13,486.86 and 3,444.78

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Solution

The fourth proportional to 8,991.16, 13,486.86 and 3,444.78 is: 5,167.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.16 : 13,486.86 = 3,444.78 : x
  2. Step 2: Convert to fraction form
    8,991.16/13,486.86 = 3,444.78/x
  3. Step 3: Cross multiply
    8,991.16x = 13,486.86 × 3,444.78
  4. Step 4: Simplify right side
    8,991.16x = 46,459,265.59
  5. Step 5: Solve for x
    x = 46,459,265.59/8,991.16
  6. Step 6: Final answer
    x = 5,167.22

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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.