Home / 5,176.50-7,143.53-2,818.64

Finding the Fourth Proportional to 5,176.50, 7,143.53 and 2,818.64

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Solution

The fourth proportional to 5,176.50, 7,143.53 and 2,818.64 is: 3,889.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.50 : 7,143.53 = 2,818.64 : x
  2. Step 2: Convert to fraction form
    5,176.50/7,143.53 = 2,818.64/x
  3. Step 3: Cross multiply
    5,176.50x = 7,143.53 × 2,818.64
  4. Step 4: Simplify right side
    5,176.50x = 20,135,039.40
  5. Step 5: Solve for x
    x = 20,135,039.40/5,176.50
  6. Step 6: Final answer
    x = 3,889.70

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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.