Home / 5,318.49-7,977.62-1,620.61

Finding the Fourth Proportional to 5,318.49, 7,977.62 and 1,620.61

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Solution

The fourth proportional to 5,318.49, 7,977.62 and 1,620.61 is: 2,430.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.49 : 7,977.62 = 1,620.61 : x
  2. Step 2: Convert to fraction form
    5,318.49/7,977.62 = 1,620.61/x
  3. Step 3: Cross multiply
    5,318.49x = 7,977.62 × 1,620.61
  4. Step 4: Simplify right side
    5,318.49x = 12,928,594.86
  5. Step 5: Solve for x
    x = 12,928,594.86/5,318.49
  6. Step 6: Final answer
    x = 2,430.88

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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.