Home / 2,621.21-3,617.44-1,442.36

Finding the Fourth Proportional to 2,621.21, 3,617.44 and 1,442.36

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Solution

The fourth proportional to 2,621.21, 3,617.44 and 1,442.36 is: 1,990.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.21 : 3,617.44 = 1,442.36 : x
  2. Step 2: Convert to fraction form
    2,621.21/3,617.44 = 1,442.36/x
  3. Step 3: Cross multiply
    2,621.21x = 3,617.44 × 1,442.36
  4. Step 4: Simplify right side
    2,621.21x = 5,217,643.96
  5. Step 5: Solve for x
    x = 5,217,643.96/2,621.21
  6. Step 6: Final answer
    x = 1,990.55

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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.