Home / 5,120.16-7,679.40-1,832.64

Finding the Fourth Proportional to 5,120.16, 7,679.40 and 1,832.64

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Solution

The fourth proportional to 5,120.16, 7,679.40 and 1,832.64 is: 2,748.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.16 : 7,679.40 = 1,832.64 : x
  2. Step 2: Convert to fraction form
    5,120.16/7,679.40 = 1,832.64/x
  3. Step 3: Cross multiply
    5,120.16x = 7,679.40 × 1,832.64
  4. Step 4: Simplify right side
    5,120.16x = 14,073,575.62
  5. Step 5: Solve for x
    x = 14,073,575.62/5,120.16
  6. Step 6: Final answer
    x = 2,748.66

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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.