Home / 5,318.58-7,979.18-1,620.62

Finding the Fourth Proportional to 5,318.58, 7,979.18 and 1,620.62

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Solution

The fourth proportional to 5,318.58, 7,979.18 and 1,620.62 is: 2,431.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.58 : 7,979.18 = 1,620.62 : x
  2. Step 2: Convert to fraction form
    5,318.58/7,979.18 = 1,620.62/x
  3. Step 3: Cross multiply
    5,318.58x = 7,979.18 × 1,620.62
  4. Step 4: Simplify right side
    5,318.58x = 12,931,200.61
  5. Step 5: Solve for x
    x = 12,931,200.61/5,318.58
  6. Step 6: Final answer
    x = 2,431.32

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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.