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Finding the Fourth Proportional to 1,830.26, 2,746.31 and 856.44

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Solution

The fourth proportional to 1,830.26, 2,746.31 and 856.44 is: 1,285.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,830.26 : 2,746.31 = 856.44 : x
  2. Step 2: Convert to fraction form
    1,830.26/2,746.31 = 856.44/x
  3. Step 3: Cross multiply
    1,830.26x = 2,746.31 × 856.44
  4. Step 4: Simplify right side
    1,830.26x = 2,352,045.45
  5. Step 5: Solve for x
    x = 2,352,045.45/1,830.26
  6. Step 6: Final answer
    x = 1,285.09

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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.