Home / 5,138.15-7,090.86-3,249.05

Finding the Fourth Proportional to 5,138.15, 7,090.86 and 3,249.05

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Solution

The fourth proportional to 5,138.15, 7,090.86 and 3,249.05 is: 4,483.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.15 : 7,090.86 = 3,249.05 : x
  2. Step 2: Convert to fraction form
    5,138.15/7,090.86 = 3,249.05/x
  3. Step 3: Cross multiply
    5,138.15x = 7,090.86 × 3,249.05
  4. Step 4: Simplify right side
    5,138.15x = 23,038,558.68
  5. Step 5: Solve for x
    x = 23,038,558.68/5,138.15
  6. Step 6: Final answer
    x = 4,483.82

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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.