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Finding the Fourth Proportional to 1,863.52, 2,796.09 and 1,287.34

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Solution

The fourth proportional to 1,863.52, 2,796.09 and 1,287.34 is: 1,931.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.52 : 2,796.09 = 1,287.34 : x
  2. Step 2: Convert to fraction form
    1,863.52/2,796.09 = 1,287.34/x
  3. Step 3: Cross multiply
    1,863.52x = 2,796.09 × 1,287.34
  4. Step 4: Simplify right side
    1,863.52x = 3,599,518.50
  5. Step 5: Solve for x
    x = 3,599,518.50/1,863.52
  6. Step 6: Final answer
    x = 1,931.57

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1.5x scale

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.