Home / 1,439.66-1,975.05-1,369.94

Finding the Fourth Proportional to 1,439.66, 1,975.05 and 1,369.94

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Solution

The fourth proportional to 1,439.66, 1,975.05 and 1,369.94 is: 1,879.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.66 : 1,975.05 = 1,369.94 : x
  2. Step 2: Convert to fraction form
    1,439.66/1,975.05 = 1,369.94/x
  3. Step 3: Cross multiply
    1,439.66x = 1,975.05 × 1,369.94
  4. Step 4: Simplify right side
    1,439.66x = 2,705,690.12
  5. Step 5: Solve for x
    x = 2,705,690.12/1,439.66
  6. Step 6: Final answer
    x = 1,879.40

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.