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Finding the Fourth Proportional to 1,367.70, 1,886.86 and 896.18

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Solution

The fourth proportional to 1,367.70, 1,886.86 and 896.18 is: 1,236.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.70 : 1,886.86 = 896.18 : x
  2. Step 2: Convert to fraction form
    1,367.70/1,886.86 = 896.18/x
  3. Step 3: Cross multiply
    1,367.70x = 1,886.86 × 896.18
  4. Step 4: Simplify right side
    1,367.70x = 1,690,957.88
  5. Step 5: Solve for x
    x = 1,690,957.88/1,367.70
  6. Step 6: Final answer
    x = 1,236.35

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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.