Home / 2,768.76-3,822.12-1,721.52

Finding the Fourth Proportional to 2,768.76, 3,822.12 and 1,721.52

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Solution

The fourth proportional to 2,768.76, 3,822.12 and 1,721.52 is: 2,376.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.76 : 3,822.12 = 1,721.52 : x
  2. Step 2: Convert to fraction form
    2,768.76/3,822.12 = 1,721.52/x
  3. Step 3: Cross multiply
    2,768.76x = 3,822.12 × 1,721.52
  4. Step 4: Simplify right side
    2,768.76x = 6,579,856.02
  5. Step 5: Solve for x
    x = 6,579,856.02/2,768.76
  6. Step 6: Final answer
    x = 2,376.46

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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.