Home / 2,980.69-4,463.94-1,661.17

Finding the Fourth Proportional to 2,980.69, 4,463.94 and 1,661.17

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Solution

The fourth proportional to 2,980.69, 4,463.94 and 1,661.17 is: 2,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.69 : 4,463.94 = 1,661.17 : x
  2. Step 2: Convert to fraction form
    2,980.69/4,463.94 = 1,661.17/x
  3. Step 3: Cross multiply
    2,980.69x = 4,463.94 × 1,661.17
  4. Step 4: Simplify right side
    2,980.69x = 7,415,363.21
  5. Step 5: Solve for x
    x = 7,415,363.21/2,980.69
  6. Step 6: Final answer
    x = 2,487.80

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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.