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Finding the Fourth Proportional to 7,808.04, 11,711.64 and 1,964.64

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Solution

The fourth proportional to 7,808.04, 11,711.64 and 1,964.64 is: 2,946.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,808.04 : 11,711.64 = 1,964.64 : x
  2. Step 2: Convert to fraction form
    7,808.04/11,711.64 = 1,964.64/x
  3. Step 3: Cross multiply
    7,808.04x = 11,711.64 × 1,964.64
  4. Step 4: Simplify right side
    7,808.04x = 23,009,156.41
  5. Step 5: Solve for x
    x = 23,009,156.41/7,808.04
  6. Step 6: Final answer
    x = 2,946.85

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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.