Home / 2,491.69-3,439.77-1,930.89

Finding the Fourth Proportional to 2,491.69, 3,439.77 and 1,930.89

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Solution

The fourth proportional to 2,491.69, 3,439.77 and 1,930.89 is: 2,665.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.69 : 3,439.77 = 1,930.89 : x
  2. Step 2: Convert to fraction form
    2,491.69/3,439.77 = 1,930.89/x
  3. Step 3: Cross multiply
    2,491.69x = 3,439.77 × 1,930.89
  4. Step 4: Simplify right side
    2,491.69x = 6,641,817.50
  5. Step 5: Solve for x
    x = 6,641,817.50/2,491.69
  6. Step 6: Final answer
    x = 2,665.59

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1.5x scale

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.