Home / 3,320.61-4,980.70-1,372.76

Finding the Fourth Proportional to 3,320.61, 4,980.70 and 1,372.76

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Solution

The fourth proportional to 3,320.61, 4,980.70 and 1,372.76 is: 2,059.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.61 : 4,980.70 = 1,372.76 : x
  2. Step 2: Convert to fraction form
    3,320.61/4,980.70 = 1,372.76/x
  3. Step 3: Cross multiply
    3,320.61x = 4,980.70 × 1,372.76
  4. Step 4: Simplify right side
    3,320.61x = 6,837,305.73
  5. Step 5: Solve for x
    x = 6,837,305.73/3,320.61
  6. Step 6: Final answer
    x = 2,059.05

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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.