Home / 4,287.94-6,431.80-1,979.44

Finding the Fourth Proportional to 4,287.94, 6,431.80 and 1,979.44

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Solution

The fourth proportional to 4,287.94, 6,431.80 and 1,979.44 is: 2,969.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,287.94 : 6,431.80 = 1,979.44 : x
  2. Step 2: Convert to fraction form
    4,287.94/6,431.80 = 1,979.44/x
  3. Step 3: Cross multiply
    4,287.94x = 6,431.80 × 1,979.44
  4. Step 4: Simplify right side
    4,287.94x = 12,731,362.19
  5. Step 5: Solve for x
    x = 12,731,362.19/4,287.94
  6. Step 6: Final answer
    x = 2,969.11

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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.