Home / 5,176.08-7,142.94-2,818.21

Finding the Fourth Proportional to 5,176.08, 7,142.94 and 2,818.21

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Solution

The fourth proportional to 5,176.08, 7,142.94 and 2,818.21 is: 3,889.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.08 : 7,142.94 = 2,818.21 : x
  2. Step 2: Convert to fraction form
    5,176.08/7,142.94 = 2,818.21/x
  3. Step 3: Cross multiply
    5,176.08x = 7,142.94 × 2,818.21
  4. Step 4: Simplify right side
    5,176.08x = 20,130,304.94
  5. Step 5: Solve for x
    x = 20,130,304.94/5,176.08
  6. Step 6: Final answer
    x = 3,889.11

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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.