Home / 5,176.74-7,143.84-2,938.68

Finding the Fourth Proportional to 5,176.74, 7,143.84 and 2,938.68

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Solution

The fourth proportional to 5,176.74, 7,143.84 and 2,938.68 is: 4,055.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.74 : 7,143.84 = 2,938.68 : x
  2. Step 2: Convert to fraction form
    5,176.74/7,143.84 = 2,938.68/x
  3. Step 3: Cross multiply
    5,176.74x = 7,143.84 × 2,938.68
  4. Step 4: Simplify right side
    5,176.74x = 20,993,459.73
  5. Step 5: Solve for x
    x = 20,993,459.73/5,176.74
  6. Step 6: Final answer
    x = 4,055.34

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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.