Home / 2,721.58-3,755.70-1,543.03

Finding the Fourth Proportional to 2,721.58, 3,755.70 and 1,543.03

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Solution

The fourth proportional to 2,721.58, 3,755.70 and 1,543.03 is: 2,129.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.58 : 3,755.70 = 1,543.03 : x
  2. Step 2: Convert to fraction form
    2,721.58/3,755.70 = 1,543.03/x
  3. Step 3: Cross multiply
    2,721.58x = 3,755.70 × 1,543.03
  4. Step 4: Simplify right side
    2,721.58x = 5,795,157.77
  5. Step 5: Solve for x
    x = 5,795,157.77/2,721.58
  6. Step 6: Final answer
    x = 2,129.34

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1.5x scale

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.