Home / 8,436.80-11,620.32-7,313.60

Finding the Fourth Proportional to 8,436.80, 11,620.32 and 7,313.60

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Solution

The fourth proportional to 8,436.80, 11,620.32 and 7,313.60 is: 10,073.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,436.80 : 11,620.32 = 7,313.60 : x
  2. Step 2: Convert to fraction form
    8,436.80/11,620.32 = 7,313.60/x
  3. Step 3: Cross multiply
    8,436.80x = 11,620.32 × 7,313.60
  4. Step 4: Simplify right side
    8,436.80x = 84,986,372.35
  5. Step 5: Solve for x
    x = 84,986,372.35/8,436.80
  6. Step 6: Final answer
    x = 10,073.29

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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.