Home / 5,209.05-7,813.32-3,129.64

Finding the Fourth Proportional to 5,209.05, 7,813.32 and 3,129.64

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Solution

The fourth proportional to 5,209.05, 7,813.32 and 3,129.64 is: 4,694.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.05 : 7,813.32 = 3,129.64 : x
  2. Step 2: Convert to fraction form
    5,209.05/7,813.32 = 3,129.64/x
  3. Step 3: Cross multiply
    5,209.05x = 7,813.32 × 3,129.64
  4. Step 4: Simplify right side
    5,209.05x = 24,452,878.80
  5. Step 5: Solve for x
    x = 24,452,878.80/5,209.05
  6. Step 6: Final answer
    x = 4,694.31

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1.5x scale

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.