Home / 2,620.94-3,616.96-1,442.12

Finding the Fourth Proportional to 2,620.94, 3,616.96 and 1,442.12

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Solution

The fourth proportional to 2,620.94, 3,616.96 and 1,442.12 is: 1,990.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.94 : 3,616.96 = 1,442.12 : x
  2. Step 2: Convert to fraction form
    2,620.94/3,616.96 = 1,442.12/x
  3. Step 3: Cross multiply
    2,620.94x = 3,616.96 × 1,442.12
  4. Step 4: Simplify right side
    2,620.94x = 5,216,090.36
  5. Step 5: Solve for x
    x = 5,216,090.36/2,620.94
  6. Step 6: Final answer
    x = 1,990.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.