Home / 1,780.06-2,456.36-1,072

Finding the Fourth Proportional to 1,780.06, 2,456.36 and 1,072

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Solution

The fourth proportional to 1,780.06, 2,456.36 and 1,072 is: 1,479.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.06 : 2,456.36 = 1,072 : x
  2. Step 2: Convert to fraction form
    1,780.06/2,456.36 = 1,072/x
  3. Step 3: Cross multiply
    1,780.06x = 2,456.36 × 1,072
  4. Step 4: Simplify right side
    1,780.06x = 2,633,217.92
  5. Step 5: Solve for x
    x = 2,633,217.92/1,780.06
  6. Step 6: Final answer
    x = 1,479.29

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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.