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Finding the Fourth Proportional to 1,335.02, 1,841.91 and 863.18

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Solution

The fourth proportional to 1,335.02, 1,841.91 and 863.18 is: 1,190.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.02 : 1,841.91 = 863.18 : x
  2. Step 2: Convert to fraction form
    1,335.02/1,841.91 = 863.18/x
  3. Step 3: Cross multiply
    1,335.02x = 1,841.91 × 863.18
  4. Step 4: Simplify right side
    1,335.02x = 1,589,890.66
  5. Step 5: Solve for x
    x = 1,589,890.66/1,335.02
  6. Step 6: Final answer
    x = 1,190.92

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1.5x scale

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.