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Finding the Fourth Proportional to 8,080.88, 11,172.06 and 7,096.40

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Solution

The fourth proportional to 8,080.88, 11,172.06 and 7,096.40 is: 9,810.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080.88 : 11,172.06 = 7,096.40 : x
  2. Step 2: Convert to fraction form
    8,080.88/11,172.06 = 7,096.40/x
  3. Step 3: Cross multiply
    8,080.88x = 11,172.06 × 7,096.40
  4. Step 4: Simplify right side
    8,080.88x = 79,281,406.58
  5. Step 5: Solve for x
    x = 79,281,406.58/8,080.88
  6. Step 6: Final answer
    x = 9,810.99

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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.