Home / 2,688.82-3,710.36-1,509.66

Finding the Fourth Proportional to 2,688.82, 3,710.36 and 1,509.66

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Solution

The fourth proportional to 2,688.82, 3,710.36 and 1,509.66 is: 2,083.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.82 : 3,710.36 = 1,509.66 : x
  2. Step 2: Convert to fraction form
    2,688.82/3,710.36 = 1,509.66/x
  3. Step 3: Cross multiply
    2,688.82x = 3,710.36 × 1,509.66
  4. Step 4: Simplify right side
    2,688.82x = 5,601,382.08
  5. Step 5: Solve for x
    x = 5,601,382.08/2,688.82
  6. Step 6: Final answer
    x = 2,083.21

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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.