Home / 5,086.09-7,629.12-1,388.35

Finding the Fourth Proportional to 5,086.09, 7,629.12 and 1,388.35

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Solution

The fourth proportional to 5,086.09, 7,629.12 and 1,388.35 is: 2,082.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,086.09 : 7,629.12 = 1,388.35 : x
  2. Step 2: Convert to fraction form
    5,086.09/7,629.12 = 1,388.35/x
  3. Step 3: Cross multiply
    5,086.09x = 7,629.12 × 1,388.35
  4. Step 4: Simplify right side
    5,086.09x = 10,591,888.75
  5. Step 5: Solve for x
    x = 10,591,888.75/5,086.09
  6. Step 6: Final answer
    x = 2,082.52

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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.