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Finding the Fourth Proportional to 7,080.46, 10,620.63 and 1,815.46

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Solution

The fourth proportional to 7,080.46, 10,620.63 and 1,815.46 is: 2,723.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,080.46 : 10,620.63 = 1,815.46 : x
  2. Step 2: Convert to fraction form
    7,080.46/10,620.63 = 1,815.46/x
  3. Step 3: Cross multiply
    7,080.46x = 10,620.63 × 1,815.46
  4. Step 4: Simplify right side
    7,080.46x = 19,281,302.39
  5. Step 5: Solve for x
    x = 19,281,302.39/7,080.46
  6. Step 6: Final answer
    x = 2,723.17

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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.