Home / 1,678.91-2,507.04-1,371.36

Finding the Fourth Proportional to 1,678.91, 2,507.04 and 1,371.36

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Solution

The fourth proportional to 1,678.91, 2,507.04 and 1,371.36 is: 2,047.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.91 : 2,507.04 = 1,371.36 : x
  2. Step 2: Convert to fraction form
    1,678.91/2,507.04 = 1,371.36/x
  3. Step 3: Cross multiply
    1,678.91x = 2,507.04 × 1,371.36
  4. Step 4: Simplify right side
    1,678.91x = 3,438,054.37
  5. Step 5: Solve for x
    x = 3,438,054.37/1,678.91
  6. Step 6: Final answer
    x = 2,047.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.