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Finding the Fourth Proportional to 5,790.94, 7,989.64 and 3,551.69

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Solution

The fourth proportional to 5,790.94, 7,989.64 and 3,551.69 is: 4,900.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,790.94 : 7,989.64 = 3,551.69 : x
  2. Step 2: Convert to fraction form
    5,790.94/7,989.64 = 3,551.69/x
  3. Step 3: Cross multiply
    5,790.94x = 7,989.64 × 3,551.69
  4. Step 4: Simplify right side
    5,790.94x = 28,376,735.59
  5. Step 5: Solve for x
    x = 28,376,735.59/5,790.94
  6. Step 6: Final answer
    x = 4,900.20

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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.