Home / 8,320.29-11,487.78-6,734

Finding the Fourth Proportional to 8,320.29, 11,487.78 and 6,734

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Solution

The fourth proportional to 8,320.29, 11,487.78 and 6,734 is: 9,297.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.29 : 11,487.78 = 6,734 : x
  2. Step 2: Convert to fraction form
    8,320.29/11,487.78 = 6,734/x
  3. Step 3: Cross multiply
    8,320.29x = 11,487.78 × 6,734
  4. Step 4: Simplify right side
    8,320.29x = 77,358,710.52
  5. Step 5: Solve for x
    x = 77,358,710.52/8,320.29
  6. Step 6: Final answer
    x = 9,297.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.