Home / 3,320.60-4,980.90-1,471.21

Finding the Fourth Proportional to 3,320.60, 4,980.90 and 1,471.21

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Solution

The fourth proportional to 3,320.60, 4,980.90 and 1,471.21 is: 2,206.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.60 : 4,980.90 = 1,471.21 : x
  2. Step 2: Convert to fraction form
    3,320.60/4,980.90 = 1,471.21/x
  3. Step 3: Cross multiply
    3,320.60x = 4,980.90 × 1,471.21
  4. Step 4: Simplify right side
    3,320.60x = 7,327,949.89
  5. Step 5: Solve for x
    x = 7,327,949.89/3,320.60
  6. Step 6: Final answer
    x = 2,206.82

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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.