Home / 3,931.20-5,893.60-1,622.08

Finding the Fourth Proportional to 3,931.20, 5,893.60 and 1,622.08

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Solution

The fourth proportional to 3,931.20, 5,893.60 and 1,622.08 is: 2,431.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.20 : 5,893.60 = 1,622.08 : x
  2. Step 2: Convert to fraction form
    3,931.20/5,893.60 = 1,622.08/x
  3. Step 3: Cross multiply
    3,931.20x = 5,893.60 × 1,622.08
  4. Step 4: Simplify right side
    3,931.20x = 9,559,890.69
  5. Step 5: Solve for x
    x = 9,559,890.69/3,931.20
  6. Step 6: Final answer
    x = 2,431.80

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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.