Home / 2,216.16-3,321.81-1,242.95

Finding the Fourth Proportional to 2,216.16, 3,321.81 and 1,242.95

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Solution

The fourth proportional to 2,216.16, 3,321.81 and 1,242.95 is: 1,863.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.16 : 3,321.81 = 1,242.95 : x
  2. Step 2: Convert to fraction form
    2,216.16/3,321.81 = 1,242.95/x
  3. Step 3: Cross multiply
    2,216.16x = 3,321.81 × 1,242.95
  4. Step 4: Simplify right side
    2,216.16x = 4,128,827.13
  5. Step 5: Solve for x
    x = 4,128,827.13/2,216.16
  6. Step 6: Final answer
    x = 1,863.05

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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.