Home / 7,553.12-11,327.70-3,390.80

Finding the Fourth Proportional to 7,553.12, 11,327.70 and 3,390.80

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Solution

The fourth proportional to 7,553.12, 11,327.70 and 3,390.80 is: 5,085.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,553.12 : 11,327.70 = 3,390.80 : x
  2. Step 2: Convert to fraction form
    7,553.12/11,327.70 = 3,390.80/x
  3. Step 3: Cross multiply
    7,553.12x = 11,327.70 × 3,390.80
  4. Step 4: Simplify right side
    7,553.12x = 38,409,965.16
  5. Step 5: Solve for x
    x = 38,409,965.16/7,553.12
  6. Step 6: Final answer
    x = 5,085.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.