Home / 9,330.50-12,876.09-5,138.75

Finding the Fourth Proportional to 9,330.50, 12,876.09 and 5,138.75

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Solution

The fourth proportional to 9,330.50, 12,876.09 and 5,138.75 is: 7,091.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,330.50 : 12,876.09 = 5,138.75 : x
  2. Step 2: Convert to fraction form
    9,330.50/12,876.09 = 5,138.75/x
  3. Step 3: Cross multiply
    9,330.50x = 12,876.09 × 5,138.75
  4. Step 4: Simplify right side
    9,330.50x = 66,167,007.49
  5. Step 5: Solve for x
    x = 66,167,007.49/9,330.50
  6. Step 6: Final answer
    x = 7,091.48

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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.