Home / 8,166.96-11,242.80-7,378.56

Finding the Fourth Proportional to 8,166.96, 11,242.80 and 7,378.56

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Solution

The fourth proportional to 8,166.96, 11,242.80 and 7,378.56 is: 10,157.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,166.96 : 11,242.80 = 7,378.56 : x
  2. Step 2: Convert to fraction form
    8,166.96/11,242.80 = 7,378.56/x
  3. Step 3: Cross multiply
    8,166.96x = 11,242.80 × 7,378.56
  4. Step 4: Simplify right side
    8,166.96x = 82,955,674.37
  5. Step 5: Solve for x
    x = 82,955,674.37/8,166.96
  6. Step 6: Final answer
    x = 10,157.47

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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.