Home / 1,986.36-2,739.50-1,490.16

Finding the Fourth Proportional to 1,986.36, 2,739.50 and 1,490.16

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Solution

The fourth proportional to 1,986.36, 2,739.50 and 1,490.16 is: 2,055.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.36 : 2,739.50 = 1,490.16 : x
  2. Step 2: Convert to fraction form
    1,986.36/2,739.50 = 1,490.16/x
  3. Step 3: Cross multiply
    1,986.36x = 2,739.50 × 1,490.16
  4. Step 4: Simplify right side
    1,986.36x = 4,082,293.32
  5. Step 5: Solve for x
    x = 4,082,293.32/1,986.36
  6. Step 6: Final answer
    x = 2,055.16

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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.