Home / 5,176.35-7,143.12-2,818.48

Finding the Fourth Proportional to 5,176.35, 7,143.12 and 2,818.48

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Solution

The fourth proportional to 5,176.35, 7,143.12 and 2,818.48 is: 3,889.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.35 : 7,143.12 = 2,818.48 : x
  2. Step 2: Convert to fraction form
    5,176.35/7,143.12 = 2,818.48/x
  3. Step 3: Cross multiply
    5,176.35x = 7,143.12 × 2,818.48
  4. Step 4: Simplify right side
    5,176.35x = 20,132,740.86
  5. Step 5: Solve for x
    x = 20,132,740.86/5,176.35
  6. Step 6: Final answer
    x = 3,889.37

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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.