Home / 1,979.15-2,969.73-810.02

Finding the Fourth Proportional to 1,979.15, 2,969.73 and 810.02

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Solution

The fourth proportional to 1,979.15, 2,969.73 and 810.02 is: 1,215.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.15 : 2,969.73 = 810.02 : x
  2. Step 2: Convert to fraction form
    1,979.15/2,969.73 = 810.02/x
  3. Step 3: Cross multiply
    1,979.15x = 2,969.73 × 810.02
  4. Step 4: Simplify right side
    1,979.15x = 2,405,525.85
  5. Step 5: Solve for x
    x = 2,405,525.85/1,979.15
  6. Step 6: Final answer
    x = 1,215.44

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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.