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Finding the Fourth Proportional to 1,804.84, 2,705.39 and 693.95

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Solution

The fourth proportional to 1,804.84, 2,705.39 and 693.95 is: 1,040.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,804.84 : 2,705.39 = 693.95 : x
  2. Step 2: Convert to fraction form
    1,804.84/2,705.39 = 693.95/x
  3. Step 3: Cross multiply
    1,804.84x = 2,705.39 × 693.95
  4. Step 4: Simplify right side
    1,804.84x = 1,877,407.13
  5. Step 5: Solve for x
    x = 1,877,407.13/1,804.84
  6. Step 6: Final answer
    x = 1,040.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.