Home / 3,119.21-4,680.18-1,656.65

Finding the Fourth Proportional to 3,119.21, 4,680.18 and 1,656.65

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Solution

The fourth proportional to 3,119.21, 4,680.18 and 1,656.65 is: 2,485.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.21 : 4,680.18 = 1,656.65 : x
  2. Step 2: Convert to fraction form
    3,119.21/4,680.18 = 1,656.65/x
  3. Step 3: Cross multiply
    3,119.21x = 4,680.18 × 1,656.65
  4. Step 4: Simplify right side
    3,119.21x = 7,753,431.90
  5. Step 5: Solve for x
    x = 7,753,431.90/3,119.21
  6. Step 6: Final answer
    x = 2,485.70

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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.