Home / 5,176.40-7,143.20-2,818.48

Finding the Fourth Proportional to 5,176.40, 7,143.20 and 2,818.48

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Solution

The fourth proportional to 5,176.40, 7,143.20 and 2,818.48 is: 3,889.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.40 : 7,143.20 = 2,818.48 : x
  2. Step 2: Convert to fraction form
    5,176.40/7,143.20 = 2,818.48/x
  3. Step 3: Cross multiply
    5,176.40x = 7,143.20 × 2,818.48
  4. Step 4: Simplify right side
    5,176.40x = 20,132,966.34
  5. Step 5: Solve for x
    x = 20,132,966.34/5,176.40
  6. Step 6: Final answer
    x = 3,889.38

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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.