Home / 3,970.06-5,478.66-2,291.44

Finding the Fourth Proportional to 3,970.06, 5,478.66 and 2,291.44

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Solution

The fourth proportional to 3,970.06, 5,478.66 and 2,291.44 is: 3,162.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.06 : 5,478.66 = 2,291.44 : x
  2. Step 2: Convert to fraction form
    3,970.06/5,478.66 = 2,291.44/x
  3. Step 3: Cross multiply
    3,970.06x = 5,478.66 × 2,291.44
  4. Step 4: Simplify right side
    3,970.06x = 12,554,020.67
  5. Step 5: Solve for x
    x = 12,554,020.67/3,970.06
  6. Step 6: Final answer
    x = 3,162.17

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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.