Home / 1,962.21-2,707.70-1,078.06

Finding the Fourth Proportional to 1,962.21, 2,707.70 and 1,078.06

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Solution

The fourth proportional to 1,962.21, 2,707.70 and 1,078.06 is: 1,487.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.21 : 2,707.70 = 1,078.06 : x
  2. Step 2: Convert to fraction form
    1,962.21/2,707.70 = 1,078.06/x
  3. Step 3: Cross multiply
    1,962.21x = 2,707.70 × 1,078.06
  4. Step 4: Simplify right side
    1,962.21x = 2,919,055.98
  5. Step 5: Solve for x
    x = 2,919,055.98/1,962.21
  6. Step 6: Final answer
    x = 1,487.64

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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.