Home / 1,677.48-2,315.06-979.08

Finding the Fourth Proportional to 1,677.48, 2,315.06 and 979.08

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Solution

The fourth proportional to 1,677.48, 2,315.06 and 979.08 is: 1,351.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.48 : 2,315.06 = 979.08 : x
  2. Step 2: Convert to fraction form
    1,677.48/2,315.06 = 979.08/x
  3. Step 3: Cross multiply
    1,677.48x = 2,315.06 × 979.08
  4. Step 4: Simplify right side
    1,677.48x = 2,266,628.94
  5. Step 5: Solve for x
    x = 2,266,628.94/1,677.48
  6. Step 6: Final answer
    x = 1,351.21

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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.