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Finding the Fourth Proportional to 6,929.78, 9,563.07 and 3,785.99

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Solution

The fourth proportional to 6,929.78, 9,563.07 and 3,785.99 is: 5,224.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,929.78 : 9,563.07 = 3,785.99 : x
  2. Step 2: Convert to fraction form
    6,929.78/9,563.07 = 3,785.99/x
  3. Step 3: Cross multiply
    6,929.78x = 9,563.07 × 3,785.99
  4. Step 4: Simplify right side
    6,929.78x = 36,205,639.57
  5. Step 5: Solve for x
    x = 36,205,639.57/6,929.78
  6. Step 6: Final answer
    x = 5,224.65

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1.5x scale

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.