Home / 5,131.64-7,078.38-3,559.16

Finding the Fourth Proportional to 5,131.64, 7,078.38 and 3,559.16

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Solution

The fourth proportional to 5,131.64, 7,078.38 and 3,559.16 is: 4,909.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.64 : 7,078.38 = 3,559.16 : x
  2. Step 2: Convert to fraction form
    5,131.64/7,078.38 = 3,559.16/x
  3. Step 3: Cross multiply
    5,131.64x = 7,078.38 × 3,559.16
  4. Step 4: Simplify right side
    5,131.64x = 25,193,086.96
  5. Step 5: Solve for x
    x = 25,193,086.96/5,131.64
  6. Step 6: Final answer
    x = 4,909.36

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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.