Home / 5,176.63-7,143.83-2,818.77

Finding the Fourth Proportional to 5,176.63, 7,143.83 and 2,818.77

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Solution

The fourth proportional to 5,176.63, 7,143.83 and 2,818.77 is: 3,889.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.63 : 7,143.83 = 2,818.77 : x
  2. Step 2: Convert to fraction form
    5,176.63/7,143.83 = 2,818.77/x
  3. Step 3: Cross multiply
    5,176.63x = 7,143.83 × 2,818.77
  4. Step 4: Simplify right side
    5,176.63x = 20,136,820.74
  5. Step 5: Solve for x
    x = 20,136,820.74/5,176.63
  6. Step 6: Final answer
    x = 3,889.95

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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.