Home / 5,530.40-7,631.82-3,172.39

Finding the Fourth Proportional to 5,530.40, 7,631.82 and 3,172.39

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Solution

The fourth proportional to 5,530.40, 7,631.82 and 3,172.39 is: 4,377.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,530.40 : 7,631.82 = 3,172.39 : x
  2. Step 2: Convert to fraction form
    5,530.40/7,631.82 = 3,172.39/x
  3. Step 3: Cross multiply
    5,530.40x = 7,631.82 × 3,172.39
  4. Step 4: Simplify right side
    5,530.40x = 24,211,109.45
  5. Step 5: Solve for x
    x = 24,211,109.45/5,530.40
  6. Step 6: Final answer
    x = 4,377.82

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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.