Home / 5,511.42-7,605.24-3,121.50

Finding the Fourth Proportional to 5,511.42, 7,605.24 and 3,121.50

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Solution

The fourth proportional to 5,511.42, 7,605.24 and 3,121.50 is: 4,307.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,511.42 : 7,605.24 = 3,121.50 : x
  2. Step 2: Convert to fraction form
    5,511.42/7,605.24 = 3,121.50/x
  3. Step 3: Cross multiply
    5,511.42x = 7,605.24 × 3,121.50
  4. Step 4: Simplify right side
    5,511.42x = 23,739,756.66
  5. Step 5: Solve for x
    x = 23,739,756.66/5,511.42
  6. Step 6: Final answer
    x = 4,307.38

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Double scale
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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.