Home / 1,439.58-1,982.16-1,086

Finding the Fourth Proportional to 1,439.58, 1,982.16 and 1,086

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Solution

The fourth proportional to 1,439.58, 1,982.16 and 1,086 is: 1,495.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.58 : 1,982.16 = 1,086 : x
  2. Step 2: Convert to fraction form
    1,439.58/1,982.16 = 1,086/x
  3. Step 3: Cross multiply
    1,439.58x = 1,982.16 × 1,086
  4. Step 4: Simplify right side
    1,439.58x = 2,152,625.76
  5. Step 5: Solve for x
    x = 2,152,625.76/1,439.58
  6. Step 6: Final answer
    x = 1,495.32

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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.