Home / 1,552.70-2,138.72-1,271.90

Finding the Fourth Proportional to 1,552.70, 2,138.72 and 1,271.90

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Solution

The fourth proportional to 1,552.70, 2,138.72 and 1,271.90 is: 1,751.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,552.70 : 2,138.72 = 1,271.90 : x
  2. Step 2: Convert to fraction form
    1,552.70/2,138.72 = 1,271.90/x
  3. Step 3: Cross multiply
    1,552.70x = 2,138.72 × 1,271.90
  4. Step 4: Simplify right side
    1,552.70x = 2,720,237.97
  5. Step 5: Solve for x
    x = 2,720,237.97/1,552.70
  6. Step 6: Final answer
    x = 1,751.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.