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Finding the Fourth Proportional to 1,662.13, 2,293.68 and 1,072.99

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Solution

The fourth proportional to 1,662.13, 2,293.68 and 1,072.99 is: 1,480.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,662.13 : 2,293.68 = 1,072.99 : x
  2. Step 2: Convert to fraction form
    1,662.13/2,293.68 = 1,072.99/x
  3. Step 3: Cross multiply
    1,662.13x = 2,293.68 × 1,072.99
  4. Step 4: Simplify right side
    1,662.13x = 2,461,095.70
  5. Step 5: Solve for x
    x = 2,461,095.70/1,662.13
  6. Step 6: Final answer
    x = 1,480.69

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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.