Home / 1,688.82-2,529.09-1,394.52

Finding the Fourth Proportional to 1,688.82, 2,529.09 and 1,394.52

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Solution

The fourth proportional to 1,688.82, 2,529.09 and 1,394.52 is: 2,088.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.82 : 2,529.09 = 1,394.52 : x
  2. Step 2: Convert to fraction form
    1,688.82/2,529.09 = 1,394.52/x
  3. Step 3: Cross multiply
    1,688.82x = 2,529.09 × 1,394.52
  4. Step 4: Simplify right side
    1,688.82x = 3,526,866.59
  5. Step 5: Solve for x
    x = 3,526,866.59/1,688.82
  6. Step 6: Final answer
    x = 2,088.36

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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.