Home / 2,129.90-3,188.61-1,584.50

Finding the Fourth Proportional to 2,129.90, 3,188.61 and 1,584.50

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Solution

The fourth proportional to 2,129.90, 3,188.61 and 1,584.50 is: 2,372.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.90 : 3,188.61 = 1,584.50 : x
  2. Step 2: Convert to fraction form
    2,129.90/3,188.61 = 1,584.50/x
  3. Step 3: Cross multiply
    2,129.90x = 3,188.61 × 1,584.50
  4. Step 4: Simplify right side
    2,129.90x = 5,052,336.60
  5. Step 5: Solve for x
    x = 5,052,336.60/2,129.90
  6. Step 6: Final answer
    x = 2,372.11

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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.