Home / 4,722.46-7,084.05-1,390.48

Finding the Fourth Proportional to 4,722.46, 7,084.05 and 1,390.48

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Solution

The fourth proportional to 4,722.46, 7,084.05 and 1,390.48 is: 2,085.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,722.46 : 7,084.05 = 1,390.48 : x
  2. Step 2: Convert to fraction form
    4,722.46/7,084.05 = 1,390.48/x
  3. Step 3: Cross multiply
    4,722.46x = 7,084.05 × 1,390.48
  4. Step 4: Simplify right side
    4,722.46x = 9,850,229.84
  5. Step 5: Solve for x
    x = 9,850,229.84/4,722.46
  6. Step 6: Final answer
    x = 2,085.83

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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.