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Finding the Fourth Proportional to 3,397.65, 4,688.94 and 1,905.53

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Solution

The fourth proportional to 3,397.65, 4,688.94 and 1,905.53 is: 2,629.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,397.65 : 4,688.94 = 1,905.53 : x
  2. Step 2: Convert to fraction form
    3,397.65/4,688.94 = 1,905.53/x
  3. Step 3: Cross multiply
    3,397.65x = 4,688.94 × 1,905.53
  4. Step 4: Simplify right side
    3,397.65x = 8,934,888.82
  5. Step 5: Solve for x
    x = 8,934,888.82/3,397.65
  6. Step 6: Final answer
    x = 2,629.73

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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.