Home / 1,903.86-2,858.37-1,317.45

Finding the Fourth Proportional to 1,903.86, 2,858.37 and 1,317.45

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Solution

The fourth proportional to 1,903.86, 2,858.37 and 1,317.45 is: 1,977.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,903.86 : 2,858.37 = 1,317.45 : x
  2. Step 2: Convert to fraction form
    1,903.86/2,858.37 = 1,317.45/x
  3. Step 3: Cross multiply
    1,903.86x = 2,858.37 × 1,317.45
  4. Step 4: Simplify right side
    1,903.86x = 3,765,759.56
  5. Step 5: Solve for x
    x = 3,765,759.56/1,903.86
  6. Step 6: Final answer
    x = 1,977.96

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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.