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Finding the Fourth Proportional to 1,928.88, 2,894.72 and 1,491.23

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Solution

The fourth proportional to 1,928.88, 2,894.72 and 1,491.23 is: 2,237.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.88 : 2,894.72 = 1,491.23 : x
  2. Step 2: Convert to fraction form
    1,928.88/2,894.72 = 1,491.23/x
  3. Step 3: Cross multiply
    1,928.88x = 2,894.72 × 1,491.23
  4. Step 4: Simplify right side
    1,928.88x = 4,316,693.09
  5. Step 5: Solve for x
    x = 4,316,693.09/1,928.88
  6. Step 6: Final answer
    x = 2,237.93

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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.