Home / 7,747.40-11,621.10-4,458.80

Finding the Fourth Proportional to 7,747.40, 11,621.10 and 4,458.80

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Solution

The fourth proportional to 7,747.40, 11,621.10 and 4,458.80 is: 6,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,747.40 : 11,621.10 = 4,458.80 : x
  2. Step 2: Convert to fraction form
    7,747.40/11,621.10 = 4,458.80/x
  3. Step 3: Cross multiply
    7,747.40x = 11,621.10 × 4,458.80
  4. Step 4: Simplify right side
    7,747.40x = 51,816,160.68
  5. Step 5: Solve for x
    x = 51,816,160.68/7,747.40
  6. Step 6: Final answer
    x = 6,688.20

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Similar ratio
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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.