Home / 9,876.03-13,628.90-5,399.78

Finding the Fourth Proportional to 9,876.03, 13,628.90 and 5,399.78

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Solution

The fourth proportional to 9,876.03, 13,628.90 and 5,399.78 is: 7,451.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,876.03 : 13,628.90 = 5,399.78 : x
  2. Step 2: Convert to fraction form
    9,876.03/13,628.90 = 5,399.78/x
  3. Step 3: Cross multiply
    9,876.03x = 13,628.90 × 5,399.78
  4. Step 4: Simplify right side
    9,876.03x = 73,593,007.00
  5. Step 5: Solve for x
    x = 73,593,007.00/9,876.03
  6. Step 6: Final answer
    x = 7,451.68

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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.