Home / 1,449.36-2,172.69-790.26

Finding the Fourth Proportional to 1,449.36, 2,172.69 and 790.26

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Solution

The fourth proportional to 1,449.36, 2,172.69 and 790.26 is: 1,184.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.36 : 2,172.69 = 790.26 : x
  2. Step 2: Convert to fraction form
    1,449.36/2,172.69 = 790.26/x
  3. Step 3: Cross multiply
    1,449.36x = 2,172.69 × 790.26
  4. Step 4: Simplify right side
    1,449.36x = 1,716,990.00
  5. Step 5: Solve for x
    x = 1,716,990.00/1,449.36
  6. Step 6: Final answer
    x = 1,184.65

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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.