Home / 5,129.16-7,078.24-2,771.30

Finding the Fourth Proportional to 5,129.16, 7,078.24 and 2,771.30

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Solution

The fourth proportional to 5,129.16, 7,078.24 and 2,771.30 is: 3,824.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.16 : 7,078.24 = 2,771.30 : x
  2. Step 2: Convert to fraction form
    5,129.16/7,078.24 = 2,771.30/x
  3. Step 3: Cross multiply
    5,129.16x = 7,078.24 × 2,771.30
  4. Step 4: Simplify right side
    5,129.16x = 19,615,964.14
  5. Step 5: Solve for x
    x = 19,615,964.14/5,129.16
  6. Step 6: Final answer
    x = 3,824.40

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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.