Home / 2,390.73-3,299.49-1,342.80

Finding the Fourth Proportional to 2,390.73, 3,299.49 and 1,342.80

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Solution

The fourth proportional to 2,390.73, 3,299.49 and 1,342.80 is: 1,853.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.73 : 3,299.49 = 1,342.80 : x
  2. Step 2: Convert to fraction form
    2,390.73/3,299.49 = 1,342.80/x
  3. Step 3: Cross multiply
    2,390.73x = 3,299.49 × 1,342.80
  4. Step 4: Simplify right side
    2,390.73x = 4,430,555.17
  5. Step 5: Solve for x
    x = 4,430,555.17/2,390.73
  6. Step 6: Final answer
    x = 1,853.22

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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.