Home / 2,717.18-3,749.68-1,538.29

Finding the Fourth Proportional to 2,717.18, 3,749.68 and 1,538.29

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Solution

The fourth proportional to 2,717.18, 3,749.68 and 1,538.29 is: 2,122.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.18 : 3,749.68 = 1,538.29 : x
  2. Step 2: Convert to fraction form
    2,717.18/3,749.68 = 1,538.29/x
  3. Step 3: Cross multiply
    2,717.18x = 3,749.68 × 1,538.29
  4. Step 4: Simplify right side
    2,717.18x = 5,768,095.25
  5. Step 5: Solve for x
    x = 5,768,095.25/2,717.18
  6. Step 6: Final answer
    x = 2,122.82

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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.