Home / 6,711.12-10,066.80-2,815.20

Finding the Fourth Proportional to 6,711.12, 10,066.80 and 2,815.20

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Solution

The fourth proportional to 6,711.12, 10,066.80 and 2,815.20 is: 4,222.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,711.12 : 10,066.80 = 2,815.20 : x
  2. Step 2: Convert to fraction form
    6,711.12/10,066.80 = 2,815.20/x
  3. Step 3: Cross multiply
    6,711.12x = 10,066.80 × 2,815.20
  4. Step 4: Simplify right side
    6,711.12x = 28,340,055.36
  5. Step 5: Solve for x
    x = 28,340,055.36/6,711.12
  6. Step 6: Final answer
    x = 4,222.85

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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.