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Finding the Fourth Proportional to 3,166.78, 4,750.47 and 826.81

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Solution

The fourth proportional to 3,166.78, 4,750.47 and 826.81 is: 1,240.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,166.78 : 4,750.47 = 826.81 : x
  2. Step 2: Convert to fraction form
    3,166.78/4,750.47 = 826.81/x
  3. Step 3: Cross multiply
    3,166.78x = 4,750.47 × 826.81
  4. Step 4: Simplify right side
    3,166.78x = 3,927,736.10
  5. Step 5: Solve for x
    x = 3,927,736.10/3,166.78
  6. Step 6: Final answer
    x = 1,240.29

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1.5x scale

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.