Home / 3,625.20-5,429.70-2,977.20

Finding the Fourth Proportional to 3,625.20, 5,429.70 and 2,977.20

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Solution

The fourth proportional to 3,625.20, 5,429.70 and 2,977.20 is: 4,459.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,625.20 : 5,429.70 = 2,977.20 : x
  2. Step 2: Convert to fraction form
    3,625.20/5,429.70 = 2,977.20/x
  3. Step 3: Cross multiply
    3,625.20x = 5,429.70 × 2,977.20
  4. Step 4: Simplify right side
    3,625.20x = 16,165,302.84
  5. Step 5: Solve for x
    x = 16,165,302.84/3,625.20
  6. Step 6: Final answer
    x = 4,459.15

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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.