Home / 5,173.08-7,138.70-2,815.16

Finding the Fourth Proportional to 5,173.08, 7,138.70 and 2,815.16

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Solution

The fourth proportional to 5,173.08, 7,138.70 and 2,815.16 is: 3,884.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.08 : 7,138.70 = 2,815.16 : x
  2. Step 2: Convert to fraction form
    5,173.08/7,138.70 = 2,815.16/x
  3. Step 3: Cross multiply
    5,173.08x = 7,138.70 × 2,815.16
  4. Step 4: Simplify right side
    5,173.08x = 20,096,582.69
  5. Step 5: Solve for x
    x = 20,096,582.69/5,173.08
  6. Step 6: Final answer
    x = 3,884.84

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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.