Home / 5,511.21-7,605.81-3,153.30

Finding the Fourth Proportional to 5,511.21, 7,605.81 and 3,153.30

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Solution

The fourth proportional to 5,511.21, 7,605.81 and 3,153.30 is: 4,351.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,511.21 : 7,605.81 = 3,153.30 : x
  2. Step 2: Convert to fraction form
    5,511.21/7,605.81 = 3,153.30/x
  3. Step 3: Cross multiply
    5,511.21x = 7,605.81 × 3,153.30
  4. Step 4: Simplify right side
    5,511.21x = 23,983,400.67
  5. Step 5: Solve for x
    x = 23,983,400.67/5,511.21
  6. Step 6: Final answer
    x = 4,351.75

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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.