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Finding the Fourth Proportional to 1,858.53, 2,798.81 and 1,617.96

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Solution

The fourth proportional to 1,858.53, 2,798.81 and 1,617.96 is: 2,436.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.53 : 2,798.81 = 1,617.96 : x
  2. Step 2: Convert to fraction form
    1,858.53/2,798.81 = 1,617.96/x
  3. Step 3: Cross multiply
    1,858.53x = 2,798.81 × 1,617.96
  4. Step 4: Simplify right side
    1,858.53x = 4,528,354.54
  5. Step 5: Solve for x
    x = 4,528,354.54/1,858.53
  6. Step 6: Final answer
    x = 2,436.52

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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.