Home / 3,661.48-5,491.08-1,321.18

Finding the Fourth Proportional to 3,661.48, 5,491.08 and 1,321.18

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Solution

The fourth proportional to 3,661.48, 5,491.08 and 1,321.18 is: 1,981.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,661.48 : 5,491.08 = 1,321.18 : x
  2. Step 2: Convert to fraction form
    3,661.48/5,491.08 = 1,321.18/x
  3. Step 3: Cross multiply
    3,661.48x = 5,491.08 × 1,321.18
  4. Step 4: Simplify right side
    3,661.48x = 7,254,685.44
  5. Step 5: Solve for x
    x = 7,254,685.44/3,661.48
  6. Step 6: Final answer
    x = 1,981.36

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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.