Home / 4,420.80-6,631.16-2,105.28

Finding the Fourth Proportional to 4,420.80, 6,631.16 and 2,105.28

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Solution

The fourth proportional to 4,420.80, 6,631.16 and 2,105.28 is: 3,157.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,420.80 : 6,631.16 = 2,105.28 : x
  2. Step 2: Convert to fraction form
    4,420.80/6,631.16 = 2,105.28/x
  3. Step 3: Cross multiply
    4,420.80x = 6,631.16 × 2,105.28
  4. Step 4: Simplify right side
    4,420.80x = 13,960,448.52
  5. Step 5: Solve for x
    x = 13,960,448.52/4,420.80
  6. Step 6: Final answer
    x = 3,157.90

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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.