Home / 8,391.57-12,582.45-3,455.64

Finding the Fourth Proportional to 8,391.57, 12,582.45 and 3,455.64

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Solution

The fourth proportional to 8,391.57, 12,582.45 and 3,455.64 is: 5,181.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.57 : 12,582.45 = 3,455.64 : x
  2. Step 2: Convert to fraction form
    8,391.57/12,582.45 = 3,455.64/x
  3. Step 3: Cross multiply
    8,391.57x = 12,582.45 × 3,455.64
  4. Step 4: Simplify right side
    8,391.57x = 43,480,417.52
  5. Step 5: Solve for x
    x = 43,480,417.52/8,391.57
  6. Step 6: Final answer
    x = 5,181.44

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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.