Home / 2,621.80-3,618-1,442.96

Finding the Fourth Proportional to 2,621.80, 3,618 and 1,442.96

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Solution

The fourth proportional to 2,621.80, 3,618 and 1,442.96 is: 1,991.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.80 : 3,618 = 1,442.96 : x
  2. Step 2: Convert to fraction form
    2,621.80/3,618 = 1,442.96/x
  3. Step 3: Cross multiply
    2,621.80x = 3,618 × 1,442.96
  4. Step 4: Simplify right side
    2,621.80x = 5,220,629.28
  5. Step 5: Solve for x
    x = 5,220,629.28/2,621.80
  6. Step 6: Final answer
    x = 1,991.24

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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.