Home / 5,115.55-7,057.46-2,876.91

Finding the Fourth Proportional to 5,115.55, 7,057.46 and 2,876.91

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Solution

The fourth proportional to 5,115.55, 7,057.46 and 2,876.91 is: 3,969.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.55 : 7,057.46 = 2,876.91 : x
  2. Step 2: Convert to fraction form
    5,115.55/7,057.46 = 2,876.91/x
  3. Step 3: Cross multiply
    5,115.55x = 7,057.46 × 2,876.91
  4. Step 4: Simplify right side
    5,115.55x = 20,303,668.26
  5. Step 5: Solve for x
    x = 20,303,668.26/5,115.55
  6. Step 6: Final answer
    x = 3,969.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.