Home / 5,176.20-7,143.28-2,818.36

Finding the Fourth Proportional to 5,176.20, 7,143.28 and 2,818.36

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Solution

The fourth proportional to 5,176.20, 7,143.28 and 2,818.36 is: 3,889.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.20 : 7,143.28 = 2,818.36 : x
  2. Step 2: Convert to fraction form
    5,176.20/7,143.28 = 2,818.36/x
  3. Step 3: Cross multiply
    5,176.20x = 7,143.28 × 2,818.36
  4. Step 4: Simplify right side
    5,176.20x = 20,132,334.62
  5. Step 5: Solve for x
    x = 20,132,334.62/5,176.20
  6. Step 6: Final answer
    x = 3,889.40

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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.