Home / 4,092.30-6,139.80-1,319.40

Finding the Fourth Proportional to 4,092.30, 6,139.80 and 1,319.40

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Solution

The fourth proportional to 4,092.30, 6,139.80 and 1,319.40 is: 1,979.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,092.30 : 6,139.80 = 1,319.40 : x
  2. Step 2: Convert to fraction form
    4,092.30/6,139.80 = 1,319.40/x
  3. Step 3: Cross multiply
    4,092.30x = 6,139.80 × 1,319.40
  4. Step 4: Simplify right side
    4,092.30x = 8,100,852.12
  5. Step 5: Solve for x
    x = 8,100,852.12/4,092.30
  6. Step 6: Final answer
    x = 1,979.54

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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.