Home / 4,744.78-7,117.01-2,147.72

Finding the Fourth Proportional to 4,744.78, 7,117.01 and 2,147.72

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Solution

The fourth proportional to 4,744.78, 7,117.01 and 2,147.72 is: 3,221.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,744.78 : 7,117.01 = 2,147.72 : x
  2. Step 2: Convert to fraction form
    4,744.78/7,117.01 = 2,147.72/x
  3. Step 3: Cross multiply
    4,744.78x = 7,117.01 × 2,147.72
  4. Step 4: Simplify right side
    4,744.78x = 15,285,309.13
  5. Step 5: Solve for x
    x = 15,285,309.13/4,744.78
  6. Step 6: Final answer
    x = 3,221.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.