Home / 2,828.20-3,903.40-1,649.26

Finding the Fourth Proportional to 2,828.20, 3,903.40 and 1,649.26

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Solution

The fourth proportional to 2,828.20, 3,903.40 and 1,649.26 is: 2,276.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.20 : 3,903.40 = 1,649.26 : x
  2. Step 2: Convert to fraction form
    2,828.20/3,903.40 = 1,649.26/x
  3. Step 3: Cross multiply
    2,828.20x = 3,903.40 × 1,649.26
  4. Step 4: Simplify right side
    2,828.20x = 6,437,721.48
  5. Step 5: Solve for x
    x = 6,437,721.48/2,828.20
  6. Step 6: Final answer
    x = 2,276.26

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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.