Home / 1,979.29-2,969.96-1,435.96

Finding the Fourth Proportional to 1,979.29, 2,969.96 and 1,435.96

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Solution

The fourth proportional to 1,979.29, 2,969.96 and 1,435.96 is: 2,154.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.29 : 2,969.96 = 1,435.96 : x
  2. Step 2: Convert to fraction form
    1,979.29/2,969.96 = 1,435.96/x
  3. Step 3: Cross multiply
    1,979.29x = 2,969.96 × 1,435.96
  4. Step 4: Simplify right side
    1,979.29x = 4,264,743.76
  5. Step 5: Solve for x
    x = 4,264,743.76/1,979.29
  6. Step 6: Final answer
    x = 2,154.68

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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.