Home / 2,828.21-3,903.40-1,649.28

Finding the Fourth Proportional to 2,828.21, 3,903.40 and 1,649.28

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Solution

The fourth proportional to 2,828.21, 3,903.40 and 1,649.28 is: 2,276.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.21 : 3,903.40 = 1,649.28 : x
  2. Step 2: Convert to fraction form
    2,828.21/3,903.40 = 1,649.28/x
  3. Step 3: Cross multiply
    2,828.21x = 3,903.40 × 1,649.28
  4. Step 4: Simplify right side
    2,828.21x = 6,437,816.25
  5. Step 5: Solve for x
    x = 6,437,816.25/2,828.21
  6. Step 6: Final answer
    x = 2,276.28

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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.