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Finding the Fourth Proportional to 3,752.70, 5,629.64 and 1,155.63

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Solution

The fourth proportional to 3,752.70, 5,629.64 and 1,155.63 is: 1,733.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,752.70 : 5,629.64 = 1,155.63 : x
  2. Step 2: Convert to fraction form
    3,752.70/5,629.64 = 1,155.63/x
  3. Step 3: Cross multiply
    3,752.70x = 5,629.64 × 1,155.63
  4. Step 4: Simplify right side
    3,752.70x = 6,505,780.87
  5. Step 5: Solve for x
    x = 6,505,780.87/3,752.70
  6. Step 6: Final answer
    x = 1,733.63

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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.