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Finding the Fourth Proportional to 7,807.05, 11,709.28 and 2,808.41

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Solution

The fourth proportional to 7,807.05, 11,709.28 and 2,808.41 is: 4,212.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,807.05 : 11,709.28 = 2,808.41 : x
  2. Step 2: Convert to fraction form
    7,807.05/11,709.28 = 2,808.41/x
  3. Step 3: Cross multiply
    7,807.05x = 11,709.28 × 2,808.41
  4. Step 4: Simplify right side
    7,807.05x = 32,884,443.53
  5. Step 5: Solve for x
    x = 32,884,443.53/7,807.05
  6. Step 6: Final answer
    x = 4,212.15

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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.