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Finding the Fourth Proportional to 1,923.76, 2,655.76 and 1,357.44

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Solution

The fourth proportional to 1,923.76, 2,655.76 and 1,357.44 is: 1,873.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,923.76 : 2,655.76 = 1,357.44 : x
  2. Step 2: Convert to fraction form
    1,923.76/2,655.76 = 1,357.44/x
  3. Step 3: Cross multiply
    1,923.76x = 2,655.76 × 1,357.44
  4. Step 4: Simplify right side
    1,923.76x = 3,605,034.85
  5. Step 5: Solve for x
    x = 3,605,034.85/1,923.76
  6. Step 6: Final answer
    x = 1,873.95

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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.