Home / 5,176.60-7,143.72-2,818.78

Finding the Fourth Proportional to 5,176.60, 7,143.72 and 2,818.78

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Solution

The fourth proportional to 5,176.60, 7,143.72 and 2,818.78 is: 3,889.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.60 : 7,143.72 = 2,818.78 : x
  2. Step 2: Convert to fraction form
    5,176.60/7,143.72 = 2,818.78/x
  3. Step 3: Cross multiply
    5,176.60x = 7,143.72 × 2,818.78
  4. Step 4: Simplify right side
    5,176.60x = 20,136,575.06
  5. Step 5: Solve for x
    x = 20,136,575.06/5,176.60
  6. Step 6: Final answer
    x = 3,889.92

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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.