Home / 2,717.12-3,749.70-1,538.25

Finding the Fourth Proportional to 2,717.12, 3,749.70 and 1,538.25

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Solution

The fourth proportional to 2,717.12, 3,749.70 and 1,538.25 is: 2,122.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.12 : 3,749.70 = 1,538.25 : x
  2. Step 2: Convert to fraction form
    2,717.12/3,749.70 = 1,538.25/x
  3. Step 3: Cross multiply
    2,717.12x = 3,749.70 × 1,538.25
  4. Step 4: Simplify right side
    2,717.12x = 5,767,976.03
  5. Step 5: Solve for x
    x = 5,767,976.03/2,717.12
  6. Step 6: Final answer
    x = 2,122.83

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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.