Home / 1,392.42-2,088.98-982.36

Finding the Fourth Proportional to 1,392.42, 2,088.98 and 982.36

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Solution

The fourth proportional to 1,392.42, 2,088.98 and 982.36 is: 1,473.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.42 : 2,088.98 = 982.36 : x
  2. Step 2: Convert to fraction form
    1,392.42/2,088.98 = 982.36/x
  3. Step 3: Cross multiply
    1,392.42x = 2,088.98 × 982.36
  4. Step 4: Simplify right side
    1,392.42x = 2,052,131.78
  5. Step 5: Solve for x
    x = 2,052,131.78/1,392.42
  6. Step 6: Final answer
    x = 1,473.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.