Home / 9,351.78-12,905.61-5,102.85

Finding the Fourth Proportional to 9,351.78, 12,905.61 and 5,102.85

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Solution

The fourth proportional to 9,351.78, 12,905.61 and 5,102.85 is: 7,042.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,351.78 : 12,905.61 = 5,102.85 : x
  2. Step 2: Convert to fraction form
    9,351.78/12,905.61 = 5,102.85/x
  3. Step 3: Cross multiply
    9,351.78x = 12,905.61 × 5,102.85
  4. Step 4: Simplify right side
    9,351.78x = 65,855,391.99
  5. Step 5: Solve for x
    x = 65,855,391.99/9,351.78
  6. Step 6: Final answer
    x = 7,042.02

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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.