Home / 1,491.03-2,237.31-1,128.06

Finding the Fourth Proportional to 1,491.03, 2,237.31 and 1,128.06

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Solution

The fourth proportional to 1,491.03, 2,237.31 and 1,128.06 is: 1,692.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.03 : 2,237.31 = 1,128.06 : x
  2. Step 2: Convert to fraction form
    1,491.03/2,237.31 = 1,128.06/x
  3. Step 3: Cross multiply
    1,491.03x = 2,237.31 × 1,128.06
  4. Step 4: Simplify right side
    1,491.03x = 2,523,819.92
  5. Step 5: Solve for x
    x = 2,523,819.92/1,491.03
  6. Step 6: Final answer
    x = 1,692.67

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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.