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Finding the Fourth Proportional to 1,928.66, 2,905 and 1,793.48

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Solution

The fourth proportional to 1,928.66, 2,905 and 1,793.48 is: 2,701.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.66 : 2,905 = 1,793.48 : x
  2. Step 2: Convert to fraction form
    1,928.66/2,905 = 1,793.48/x
  3. Step 3: Cross multiply
    1,928.66x = 2,905 × 1,793.48
  4. Step 4: Simplify right side
    1,928.66x = 5,210,059.40
  5. Step 5: Solve for x
    x = 5,210,059.40/1,928.66
  6. Step 6: Final answer
    x = 2,701.39

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.