Home / 1,453.96-2,180.94-1,128.40

Finding the Fourth Proportional to 1,453.96, 2,180.94 and 1,128.40

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Solution

The fourth proportional to 1,453.96, 2,180.94 and 1,128.40 is: 1,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453.96 : 2,180.94 = 1,128.40 : x
  2. Step 2: Convert to fraction form
    1,453.96/2,180.94 = 1,128.40/x
  3. Step 3: Cross multiply
    1,453.96x = 2,180.94 × 1,128.40
  4. Step 4: Simplify right side
    1,453.96x = 2,460,972.70
  5. Step 5: Solve for x
    x = 2,460,972.70/1,453.96
  6. Step 6: Final answer
    x = 1,692.60

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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.