Home / 3,228.90-4,842.51-1,281.12

Finding the Fourth Proportional to 3,228.90, 4,842.51 and 1,281.12

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Solution

The fourth proportional to 3,228.90, 4,842.51 and 1,281.12 is: 1,921.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228.90 : 4,842.51 = 1,281.12 : x
  2. Step 2: Convert to fraction form
    3,228.90/4,842.51 = 1,281.12/x
  3. Step 3: Cross multiply
    3,228.90x = 4,842.51 × 1,281.12
  4. Step 4: Simplify right side
    3,228.90x = 6,203,836.41
  5. Step 5: Solve for x
    x = 6,203,836.41/3,228.90
  6. Step 6: Final answer
    x = 1,921.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.