Home / 1,979.37-2,732.22-1,316.40

Finding the Fourth Proportional to 1,979.37, 2,732.22 and 1,316.40

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Solution

The fourth proportional to 1,979.37, 2,732.22 and 1,316.40 is: 1,817.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.37 : 2,732.22 = 1,316.40 : x
  2. Step 2: Convert to fraction form
    1,979.37/2,732.22 = 1,316.40/x
  3. Step 3: Cross multiply
    1,979.37x = 2,732.22 × 1,316.40
  4. Step 4: Simplify right side
    1,979.37x = 3,596,694.41
  5. Step 5: Solve for x
    x = 3,596,694.41/1,979.37
  6. Step 6: Final answer
    x = 1,817.09

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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.