Home / 5,319.46-7,979.19-1,855.90

Finding the Fourth Proportional to 5,319.46, 7,979.19 and 1,855.90

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Solution

The fourth proportional to 5,319.46, 7,979.19 and 1,855.90 is: 2,783.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.46 : 7,979.19 = 1,855.90 : x
  2. Step 2: Convert to fraction form
    5,319.46/7,979.19 = 1,855.90/x
  3. Step 3: Cross multiply
    5,319.46x = 7,979.19 × 1,855.90
  4. Step 4: Simplify right side
    5,319.46x = 14,808,578.72
  5. Step 5: Solve for x
    x = 14,808,578.72/5,319.46
  6. Step 6: Final answer
    x = 2,783.85

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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.