Home / 1,319.26-1,977.12-1,027.12

Finding the Fourth Proportional to 1,319.26, 1,977.12 and 1,027.12

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Solution

The fourth proportional to 1,319.26, 1,977.12 and 1,027.12 is: 1,539.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.26 : 1,977.12 = 1,027.12 : x
  2. Step 2: Convert to fraction form
    1,319.26/1,977.12 = 1,027.12/x
  3. Step 3: Cross multiply
    1,319.26x = 1,977.12 × 1,027.12
  4. Step 4: Simplify right side
    1,319.26x = 2,030,739.49
  5. Step 5: Solve for x
    x = 2,030,739.49/1,319.26
  6. Step 6: Final answer
    x = 1,539.30

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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.