Home / 4,785.12-7,169.99-3,140.42

Finding the Fourth Proportional to 4,785.12, 7,169.99 and 3,140.42

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Solution

The fourth proportional to 4,785.12, 7,169.99 and 3,140.42 is: 4,705.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,785.12 : 7,169.99 = 3,140.42 : x
  2. Step 2: Convert to fraction form
    4,785.12/7,169.99 = 3,140.42/x
  3. Step 3: Cross multiply
    4,785.12x = 7,169.99 × 3,140.42
  4. Step 4: Simplify right side
    4,785.12x = 22,516,728.44
  5. Step 5: Solve for x
    x = 22,516,728.44/4,785.12
  6. Step 6: Final answer
    x = 4,705.57

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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.