Home / 2,838.18-4,257.78-1,172.31

Finding the Fourth Proportional to 2,838.18, 4,257.78 and 1,172.31

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Solution

The fourth proportional to 2,838.18, 4,257.78 and 1,172.31 is: 1,758.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.18 : 4,257.78 = 1,172.31 : x
  2. Step 2: Convert to fraction form
    2,838.18/4,257.78 = 1,172.31/x
  3. Step 3: Cross multiply
    2,838.18x = 4,257.78 × 1,172.31
  4. Step 4: Simplify right side
    2,838.18x = 4,991,424.30
  5. Step 5: Solve for x
    x = 4,991,424.30/2,838.18
  6. Step 6: Final answer
    x = 1,758.67

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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.