Home / 1,538.57-2,307.80-845.56

Finding the Fourth Proportional to 1,538.57, 2,307.80 and 845.56

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Solution

The fourth proportional to 1,538.57, 2,307.80 and 845.56 is: 1,268.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.57 : 2,307.80 = 845.56 : x
  2. Step 2: Convert to fraction form
    1,538.57/2,307.80 = 845.56/x
  3. Step 3: Cross multiply
    1,538.57x = 2,307.80 × 845.56
  4. Step 4: Simplify right side
    1,538.57x = 1,951,379.14
  5. Step 5: Solve for x
    x = 1,951,379.14/1,538.57
  6. Step 6: Final answer
    x = 1,268.31

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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.