Home / 5,176.77-7,143.57-2,938.44

Finding the Fourth Proportional to 5,176.77, 7,143.57 and 2,938.44

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Solution

The fourth proportional to 5,176.77, 7,143.57 and 2,938.44 is: 4,054.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.77 : 7,143.57 = 2,938.44 : x
  2. Step 2: Convert to fraction form
    5,176.77/7,143.57 = 2,938.44/x
  3. Step 3: Cross multiply
    5,176.77x = 7,143.57 × 2,938.44
  4. Step 4: Simplify right side
    5,176.77x = 20,990,951.83
  5. Step 5: Solve for x
    x = 20,990,951.83/5,176.77
  6. Step 6: Final answer
    x = 4,054.84

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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.