Home / 7,764.81-11,639.12-3,381.09

Finding the Fourth Proportional to 7,764.81, 11,639.12 and 3,381.09

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Solution

The fourth proportional to 7,764.81, 11,639.12 and 3,381.09 is: 5,068.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.81 : 11,639.12 = 3,381.09 : x
  2. Step 2: Convert to fraction form
    7,764.81/11,639.12 = 3,381.09/x
  3. Step 3: Cross multiply
    7,764.81x = 11,639.12 × 3,381.09
  4. Step 4: Simplify right side
    7,764.81x = 39,352,895.34
  5. Step 5: Solve for x
    x = 39,352,895.34/7,764.81
  6. Step 6: Final answer
    x = 5,068.11

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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.