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Finding the Fourth Proportional to 1,679.45, 2,319.59 and 1,119

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Solution

The fourth proportional to 1,679.45, 2,319.59 and 1,119 is: 1,545.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.45 : 2,319.59 = 1,119 : x
  2. Step 2: Convert to fraction form
    1,679.45/2,319.59 = 1,119/x
  3. Step 3: Cross multiply
    1,679.45x = 2,319.59 × 1,119
  4. Step 4: Simplify right side
    1,679.45x = 2,595,615.62
  5. Step 5: Solve for x
    x = 2,595,615.62/1,679.45
  6. Step 6: Final answer
    x = 1,545.52

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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.