Home / 5,173.28-7,140.32-3,078.60

Finding the Fourth Proportional to 5,173.28, 7,140.32 and 3,078.60

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Solution

The fourth proportional to 5,173.28, 7,140.32 and 3,078.60 is: 4,249.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.28 : 7,140.32 = 3,078.60 : x
  2. Step 2: Convert to fraction form
    5,173.28/7,140.32 = 3,078.60/x
  3. Step 3: Cross multiply
    5,173.28x = 7,140.32 × 3,078.60
  4. Step 4: Simplify right side
    5,173.28x = 21,982,189.15
  5. Step 5: Solve for x
    x = 21,982,189.15/5,173.28
  6. Step 6: Final answer
    x = 4,249.18

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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.