Home / 5,176.50-7,143.78-2,938.35

Finding the Fourth Proportional to 5,176.50, 7,143.78 and 2,938.35

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Solution

The fourth proportional to 5,176.50, 7,143.78 and 2,938.35 is: 4,055.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.50 : 7,143.78 = 2,938.35 : x
  2. Step 2: Convert to fraction form
    5,176.50/7,143.78 = 2,938.35/x
  3. Step 3: Cross multiply
    5,176.50x = 7,143.78 × 2,938.35
  4. Step 4: Simplify right side
    5,176.50x = 20,990,925.96
  5. Step 5: Solve for x
    x = 20,990,925.96/5,176.50
  6. Step 6: Final answer
    x = 4,055.04

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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.