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Finding the Fourth Proportional to 6,641.58, 9,149.79 and 4,621.52

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Solution

The fourth proportional to 6,641.58, 9,149.79 and 4,621.52 is: 6,366.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.58 : 9,149.79 = 4,621.52 : x
  2. Step 2: Convert to fraction form
    6,641.58/9,149.79 = 4,621.52/x
  3. Step 3: Cross multiply
    6,641.58x = 9,149.79 × 4,621.52
  4. Step 4: Simplify right side
    6,641.58x = 42,285,898.97
  5. Step 5: Solve for x
    x = 42,285,898.97/6,641.58
  6. Step 6: Final answer
    x = 6,366.85

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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.