Home / 3,228.48-4,455.36-1,903.20

Finding the Fourth Proportional to 3,228.48, 4,455.36 and 1,903.20

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Solution

The fourth proportional to 3,228.48, 4,455.36 and 1,903.20 is: 2,626.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228.48 : 4,455.36 = 1,903.20 : x
  2. Step 2: Convert to fraction form
    3,228.48/4,455.36 = 1,903.20/x
  3. Step 3: Cross multiply
    3,228.48x = 4,455.36 × 1,903.20
  4. Step 4: Simplify right side
    3,228.48x = 8,479,441.15
  5. Step 5: Solve for x
    x = 8,479,441.15/3,228.48
  6. Step 6: Final answer
    x = 2,626.45

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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.