Home / 8,313.52-11,471.34-6,639.52

Finding the Fourth Proportional to 8,313.52, 11,471.34 and 6,639.52

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Solution

The fourth proportional to 8,313.52, 11,471.34 and 6,639.52 is: 9,161.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,313.52 : 11,471.34 = 6,639.52 : x
  2. Step 2: Convert to fraction form
    8,313.52/11,471.34 = 6,639.52/x
  3. Step 3: Cross multiply
    8,313.52x = 11,471.34 × 6,639.52
  4. Step 4: Simplify right side
    8,313.52x = 76,164,191.36
  5. Step 5: Solve for x
    x = 76,164,191.36/8,313.52
  6. Step 6: Final answer
    x = 9,161.49

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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.