Home / 2,748.40-3,789.74-2,117.52

Finding the Fourth Proportional to 2,748.40, 3,789.74 and 2,117.52

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Solution

The fourth proportional to 2,748.40, 3,789.74 and 2,117.52 is: 2,919.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.40 : 3,789.74 = 2,117.52 : x
  2. Step 2: Convert to fraction form
    2,748.40/3,789.74 = 2,117.52/x
  3. Step 3: Cross multiply
    2,748.40x = 3,789.74 × 2,117.52
  4. Step 4: Simplify right side
    2,748.40x = 8,024,850.24
  5. Step 5: Solve for x
    x = 8,024,850.24/2,748.40
  6. Step 6: Final answer
    x = 2,919.83

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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.