Home / 5,176.20-7,142.76-2,818.30

Finding the Fourth Proportional to 5,176.20, 7,142.76 and 2,818.30

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Solution

The fourth proportional to 5,176.20, 7,142.76 and 2,818.30 is: 3,889.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.20 : 7,142.76 = 2,818.30 : x
  2. Step 2: Convert to fraction form
    5,176.20/7,142.76 = 2,818.30/x
  3. Step 3: Cross multiply
    5,176.20x = 7,142.76 × 2,818.30
  4. Step 4: Simplify right side
    5,176.20x = 20,130,440.51
  5. Step 5: Solve for x
    x = 20,130,440.51/5,176.20
  6. Step 6: Final answer
    x = 3,889.04

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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.