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Finding the Fourth Proportional to 1,934.98, 2,903.28 and 1,391.47

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Solution

The fourth proportional to 1,934.98, 2,903.28 and 1,391.47 is: 2,087.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,934.98 : 2,903.28 = 1,391.47 : x
  2. Step 2: Convert to fraction form
    1,934.98/2,903.28 = 1,391.47/x
  3. Step 3: Cross multiply
    1,934.98x = 2,903.28 × 1,391.47
  4. Step 4: Simplify right side
    1,934.98x = 4,039,827.02
  5. Step 5: Solve for x
    x = 4,039,827.02/1,934.98
  6. Step 6: Final answer
    x = 2,087.79

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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.