Home / 1,477.44-2,038.68-979.12

Finding the Fourth Proportional to 1,477.44, 2,038.68 and 979.12

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Solution

The fourth proportional to 1,477.44, 2,038.68 and 979.12 is: 1,351.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.44 : 2,038.68 = 979.12 : x
  2. Step 2: Convert to fraction form
    1,477.44/2,038.68 = 979.12/x
  3. Step 3: Cross multiply
    1,477.44x = 2,038.68 × 979.12
  4. Step 4: Simplify right side
    1,477.44x = 1,996,112.36
  5. Step 5: Solve for x
    x = 1,996,112.36/1,477.44
  6. Step 6: Final answer
    x = 1,351.06

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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.