Home / 1,986.24-2,979.36-1,342.32

Finding the Fourth Proportional to 1,986.24, 2,979.36 and 1,342.32

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Solution

The fourth proportional to 1,986.24, 2,979.36 and 1,342.32 is: 2,013.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.24 : 2,979.36 = 1,342.32 : x
  2. Step 2: Convert to fraction form
    1,986.24/2,979.36 = 1,342.32/x
  3. Step 3: Cross multiply
    1,986.24x = 2,979.36 × 1,342.32
  4. Step 4: Simplify right side
    1,986.24x = 3,999,254.52
  5. Step 5: Solve for x
    x = 3,999,254.52/1,986.24
  6. Step 6: Final answer
    x = 2,013.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.