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Finding the Fourth Proportional to 6,384.15, 8,809.90 and 3,551.65

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Solution

The fourth proportional to 6,384.15, 8,809.90 and 3,551.65 is: 4,901.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,384.15 : 8,809.90 = 3,551.65 : x
  2. Step 2: Convert to fraction form
    6,384.15/8,809.90 = 3,551.65/x
  3. Step 3: Cross multiply
    6,384.15x = 8,809.90 × 3,551.65
  4. Step 4: Simplify right side
    6,384.15x = 31,289,650.43
  5. Step 5: Solve for x
    x = 31,289,650.43/6,384.15
  6. Step 6: Final answer
    x = 4,901.15

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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.