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Finding the Fourth Proportional to 1,928.75, 2,893.13 and 560.75

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Solution

The fourth proportional to 1,928.75, 2,893.13 and 560.75 is: 841.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.75 : 2,893.13 = 560.75 : x
  2. Step 2: Convert to fraction form
    1,928.75/2,893.13 = 560.75/x
  3. Step 3: Cross multiply
    1,928.75x = 2,893.13 × 560.75
  4. Step 4: Simplify right side
    1,928.75x = 1,622,322.65
  5. Step 5: Solve for x
    x = 1,622,322.65/1,928.75
  6. Step 6: Final answer
    x = 841.13

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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.