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Finding the Fourth Proportional to 8,991.76, 13,488.58 and 3,449.74

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Solution

The fourth proportional to 8,991.76, 13,488.58 and 3,449.74 is: 5,174.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.76 : 13,488.58 = 3,449.74 : x
  2. Step 2: Convert to fraction form
    8,991.76/13,488.58 = 3,449.74/x
  3. Step 3: Cross multiply
    8,991.76x = 13,488.58 × 3,449.74
  4. Step 4: Simplify right side
    8,991.76x = 46,532,070.45
  5. Step 5: Solve for x
    x = 46,532,070.45/8,991.76
  6. Step 6: Final answer
    x = 5,174.97

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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.