Home / 5,188.64-7,160.34-2,830.72

Finding the Fourth Proportional to 5,188.64, 7,160.34 and 2,830.72

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Solution

The fourth proportional to 5,188.64, 7,160.34 and 2,830.72 is: 3,906.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,188.64 : 7,160.34 = 2,830.72 : x
  2. Step 2: Convert to fraction form
    5,188.64/7,160.34 = 2,830.72/x
  3. Step 3: Cross multiply
    5,188.64x = 7,160.34 × 2,830.72
  4. Step 4: Simplify right side
    5,188.64x = 20,268,917.64
  5. Step 5: Solve for x
    x = 20,268,917.64/5,188.64
  6. Step 6: Final answer
    x = 3,906.40

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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.