Home / 4,078.88-6,118.32-1,157.20

Finding the Fourth Proportional to 4,078.88, 6,118.32 and 1,157.20

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Solution

The fourth proportional to 4,078.88, 6,118.32 and 1,157.20 is: 1,735.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.88 : 6,118.32 = 1,157.20 : x
  2. Step 2: Convert to fraction form
    4,078.88/6,118.32 = 1,157.20/x
  3. Step 3: Cross multiply
    4,078.88x = 6,118.32 × 1,157.20
  4. Step 4: Simplify right side
    4,078.88x = 7,080,119.90
  5. Step 5: Solve for x
    x = 7,080,119.90/4,078.88
  6. Step 6: Final answer
    x = 1,735.80

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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.