Home / 1,319.58-1,817.64-1,109.52

Finding the Fourth Proportional to 1,319.58, 1,817.64 and 1,109.52

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Solution

The fourth proportional to 1,319.58, 1,817.64 and 1,109.52 is: 1,528.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.58 : 1,817.64 = 1,109.52 : x
  2. Step 2: Convert to fraction form
    1,319.58/1,817.64 = 1,109.52/x
  3. Step 3: Cross multiply
    1,319.58x = 1,817.64 × 1,109.52
  4. Step 4: Simplify right side
    1,319.58x = 2,016,707.93
  5. Step 5: Solve for x
    x = 2,016,707.93/1,319.58
  6. Step 6: Final answer
    x = 1,528.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.