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Finding the Fourth Proportional to 2,365.92, 3,263.76 and 1,972.80

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Solution

The fourth proportional to 2,365.92, 3,263.76 and 1,972.80 is: 2,721.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,365.92 : 3,263.76 = 1,972.80 : x
  2. Step 2: Convert to fraction form
    2,365.92/3,263.76 = 1,972.80/x
  3. Step 3: Cross multiply
    2,365.92x = 3,263.76 × 1,972.80
  4. Step 4: Simplify right side
    2,365.92x = 6,438,745.73
  5. Step 5: Solve for x
    x = 6,438,745.73/2,365.92
  6. Step 6: Final answer
    x = 2,721.46

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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.