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Finding the Fourth Proportional to 1,755.63, 2,631.56 and 934.43

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Solution

The fourth proportional to 1,755.63, 2,631.56 and 934.43 is: 1,400.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,755.63 : 2,631.56 = 934.43 : x
  2. Step 2: Convert to fraction form
    1,755.63/2,631.56 = 934.43/x
  3. Step 3: Cross multiply
    1,755.63x = 2,631.56 × 934.43
  4. Step 4: Simplify right side
    1,755.63x = 2,458,990.78
  5. Step 5: Solve for x
    x = 2,458,990.78/1,755.63
  6. Step 6: Final answer
    x = 1,400.63

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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.