Home / 7,239.40-10,860.30-3,081.40

Finding the Fourth Proportional to 7,239.40, 10,860.30 and 3,081.40

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Solution

The fourth proportional to 7,239.40, 10,860.30 and 3,081.40 is: 4,622.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.40 : 10,860.30 = 3,081.40 : x
  2. Step 2: Convert to fraction form
    7,239.40/10,860.30 = 3,081.40/x
  3. Step 3: Cross multiply
    7,239.40x = 10,860.30 × 3,081.40
  4. Step 4: Simplify right side
    7,239.40x = 33,464,928.42
  5. Step 5: Solve for x
    x = 33,464,928.42/7,239.40
  6. Step 6: Final answer
    x = 4,622.61

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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.