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Finding the Fourth Proportional to 3,530.76, 5,295.74 and 933.90

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Solution

The fourth proportional to 3,530.76, 5,295.74 and 933.90 is: 1,400.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,530.76 : 5,295.74 = 933.90 : x
  2. Step 2: Convert to fraction form
    3,530.76/5,295.74 = 933.90/x
  3. Step 3: Cross multiply
    3,530.76x = 5,295.74 × 933.90
  4. Step 4: Simplify right side
    3,530.76x = 4,945,691.59
  5. Step 5: Solve for x
    x = 4,945,691.59/3,530.76
  6. Step 6: Final answer
    x = 1,400.74

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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.