Home / 7,765.16-11,643.80-3,380.62

Finding the Fourth Proportional to 7,765.16, 11,643.80 and 3,380.62

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Solution

The fourth proportional to 7,765.16, 11,643.80 and 3,380.62 is: 5,069.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,765.16 : 11,643.80 = 3,380.62 : x
  2. Step 2: Convert to fraction form
    7,765.16/11,643.80 = 3,380.62/x
  3. Step 3: Cross multiply
    7,765.16x = 11,643.80 × 3,380.62
  4. Step 4: Simplify right side
    7,765.16x = 39,363,263.16
  5. Step 5: Solve for x
    x = 39,363,263.16/7,765.16
  6. Step 6: Final answer
    x = 5,069.21

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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.