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Finding the Fourth Proportional to 1,367.88, 1,887.71 and 746.88

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Solution

The fourth proportional to 1,367.88, 1,887.71 and 746.88 is: 1,030.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.88 : 1,887.71 = 746.88 : x
  2. Step 2: Convert to fraction form
    1,367.88/1,887.71 = 746.88/x
  3. Step 3: Cross multiply
    1,367.88x = 1,887.71 × 746.88
  4. Step 4: Simplify right side
    1,367.88x = 1,409,892.84
  5. Step 5: Solve for x
    x = 1,409,892.84/1,367.88
  6. Step 6: Final answer
    x = 1,030.71

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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.