Home / 9,138.96-12,611.84-5,364.36

Finding the Fourth Proportional to 9,138.96, 12,611.84 and 5,364.36

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Solution

The fourth proportional to 9,138.96, 12,611.84 and 5,364.36 is: 7,402.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.96 : 12,611.84 = 5,364.36 : x
  2. Step 2: Convert to fraction form
    9,138.96/12,611.84 = 5,364.36/x
  3. Step 3: Cross multiply
    9,138.96x = 12,611.84 × 5,364.36
  4. Step 4: Simplify right side
    9,138.96x = 67,654,450.02
  5. Step 5: Solve for x
    x = 67,654,450.02/9,138.96
  6. Step 6: Final answer
    x = 7,402.86

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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.