Home / 2,151.90-3,228.21-1,056.12

Finding the Fourth Proportional to 2,151.90, 3,228.21 and 1,056.12

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Solution

The fourth proportional to 2,151.90, 3,228.21 and 1,056.12 is: 1,584.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.90 : 3,228.21 = 1,056.12 : x
  2. Step 2: Convert to fraction form
    2,151.90/3,228.21 = 1,056.12/x
  3. Step 3: Cross multiply
    2,151.90x = 3,228.21 × 1,056.12
  4. Step 4: Simplify right side
    2,151.90x = 3,409,377.15
  5. Step 5: Solve for x
    x = 3,409,377.15/2,151.90
  6. Step 6: Final answer
    x = 1,584.36

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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.