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Finding the Fourth Proportional to 4,156.91, 6,230.35 and 1,815.91

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Solution

The fourth proportional to 4,156.91, 6,230.35 and 1,815.91 is: 2,721.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,156.91 : 6,230.35 = 1,815.91 : x
  2. Step 2: Convert to fraction form
    4,156.91/6,230.35 = 1,815.91/x
  3. Step 3: Cross multiply
    4,156.91x = 6,230.35 × 1,815.91
  4. Step 4: Simplify right side
    4,156.91x = 11,313,714.64
  5. Step 5: Solve for x
    x = 11,313,714.64/4,156.91
  6. Step 6: Final answer
    x = 2,721.67

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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.