Home / 9,138.76-13,710.44-4,211.85

Finding the Fourth Proportional to 9,138.76, 13,710.44 and 4,211.85

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Solution

The fourth proportional to 9,138.76, 13,710.44 and 4,211.85 is: 6,318.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.76 : 13,710.44 = 4,211.85 : x
  2. Step 2: Convert to fraction form
    9,138.76/13,710.44 = 4,211.85/x
  3. Step 3: Cross multiply
    9,138.76x = 13,710.44 × 4,211.85
  4. Step 4: Simplify right side
    9,138.76x = 57,746,376.45
  5. Step 5: Solve for x
    x = 57,746,376.45/9,138.76
  6. Step 6: Final answer
    x = 6,318.84

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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.