Home / 2,128.04-3,188.46-1,304.60

Finding the Fourth Proportional to 2,128.04, 3,188.46 and 1,304.60

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Solution

The fourth proportional to 2,128.04, 3,188.46 and 1,304.60 is: 1,954.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.04 : 3,188.46 = 1,304.60 : x
  2. Step 2: Convert to fraction form
    2,128.04/3,188.46 = 1,304.60/x
  3. Step 3: Cross multiply
    2,128.04x = 3,188.46 × 1,304.60
  4. Step 4: Simplify right side
    2,128.04x = 4,159,664.92
  5. Step 5: Solve for x
    x = 4,159,664.92/2,128.04
  6. Step 6: Final answer
    x = 1,954.69

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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.