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Finding the Fourth Proportional to 2,903.68, 4,007.28 and 1,661.68

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Solution

The fourth proportional to 2,903.68, 4,007.28 and 1,661.68 is: 2,293.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,903.68 : 4,007.28 = 1,661.68 : x
  2. Step 2: Convert to fraction form
    2,903.68/4,007.28 = 1,661.68/x
  3. Step 3: Cross multiply
    2,903.68x = 4,007.28 × 1,661.68
  4. Step 4: Simplify right side
    2,903.68x = 6,658,817.03
  5. Step 5: Solve for x
    x = 6,658,817.03/2,903.68
  6. Step 6: Final answer
    x = 2,293.23

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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.