Home / 5,491.64-8,236.34-1,981.54

Finding the Fourth Proportional to 5,491.64, 8,236.34 and 1,981.54

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Solution

The fourth proportional to 5,491.64, 8,236.34 and 1,981.54 is: 2,971.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,491.64 : 8,236.34 = 1,981.54 : x
  2. Step 2: Convert to fraction form
    5,491.64/8,236.34 = 1,981.54/x
  3. Step 3: Cross multiply
    5,491.64x = 8,236.34 × 1,981.54
  4. Step 4: Simplify right side
    5,491.64x = 16,320,637.16
  5. Step 5: Solve for x
    x = 16,320,637.16/5,491.64
  6. Step 6: Final answer
    x = 2,971.91

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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.