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Finding the Fourth Proportional to 6,287.08, 9,429.78 and 3,947.32

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Solution

The fourth proportional to 6,287.08, 9,429.78 and 3,947.32 is: 5,920.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,287.08 : 9,429.78 = 3,947.32 : x
  2. Step 2: Convert to fraction form
    6,287.08/9,429.78 = 3,947.32/x
  3. Step 3: Cross multiply
    6,287.08x = 9,429.78 × 3,947.32
  4. Step 4: Simplify right side
    6,287.08x = 37,222,359.19
  5. Step 5: Solve for x
    x = 37,222,359.19/6,287.08
  6. Step 6: Final answer
    x = 5,920.45

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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.