Home / 1,376.14-2,064.44-820.58

Finding the Fourth Proportional to 1,376.14, 2,064.44 and 820.58

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Solution

The fourth proportional to 1,376.14, 2,064.44 and 820.58 is: 1,231.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376.14 : 2,064.44 = 820.58 : x
  2. Step 2: Convert to fraction form
    1,376.14/2,064.44 = 820.58/x
  3. Step 3: Cross multiply
    1,376.14x = 2,064.44 × 820.58
  4. Step 4: Simplify right side
    1,376.14x = 1,694,036.90
  5. Step 5: Solve for x
    x = 1,694,036.90/1,376.14
  6. Step 6: Final answer
    x = 1,231.01

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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.