Home / 7,759.89-11,639.84-6,386.34

Finding the Fourth Proportional to 7,759.89, 11,639.84 and 6,386.34

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Solution

The fourth proportional to 7,759.89, 11,639.84 and 6,386.34 is: 9,579.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,759.89 : 11,639.84 = 6,386.34 : x
  2. Step 2: Convert to fraction form
    7,759.89/11,639.84 = 6,386.34/x
  3. Step 3: Cross multiply
    7,759.89x = 11,639.84 × 6,386.34
  4. Step 4: Simplify right side
    7,759.89x = 74,335,943.85
  5. Step 5: Solve for x
    x = 74,335,943.85/7,759.89
  6. Step 6: Final answer
    x = 9,579.51

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Similar ratio
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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.