Home / 5,143.48-7,097.92-2,874.87

Finding the Fourth Proportional to 5,143.48, 7,097.92 and 2,874.87

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Solution

The fourth proportional to 5,143.48, 7,097.92 and 2,874.87 is: 3,967.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.48 : 7,097.92 = 2,874.87 : x
  2. Step 2: Convert to fraction form
    5,143.48/7,097.92 = 2,874.87/x
  3. Step 3: Cross multiply
    5,143.48x = 7,097.92 × 2,874.87
  4. Step 4: Simplify right side
    5,143.48x = 20,405,598.00
  5. Step 5: Solve for x
    x = 20,405,598.00/5,143.48
  6. Step 6: Final answer
    x = 3,967.28

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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.