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Finding the Fourth Proportional to 11,080.80, 15,290.64 and 6,364.08

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Solution

The fourth proportional to 11,080.80, 15,290.64 and 6,364.08 is: 8,781.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,080.80 : 15,290.64 = 6,364.08 : x
  2. Step 2: Convert to fraction form
    11,080.80/15,290.64 = 6,364.08/x
  3. Step 3: Cross multiply
    11,080.80x = 15,290.64 × 6,364.08
  4. Step 4: Simplify right side
    11,080.80x = 97,310,856.21
  5. Step 5: Solve for x
    x = 97,310,856.21/11,080.80
  6. Step 6: Final answer
    x = 8,781.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.