Home / 4,128.21-6,189.35-1,935.72

Finding the Fourth Proportional to 4,128.21, 6,189.35 and 1,935.72

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Solution

The fourth proportional to 4,128.21, 6,189.35 and 1,935.72 is: 2,902.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.21 : 6,189.35 = 1,935.72 : x
  2. Step 2: Convert to fraction form
    4,128.21/6,189.35 = 1,935.72/x
  3. Step 3: Cross multiply
    4,128.21x = 6,189.35 × 1,935.72
  4. Step 4: Simplify right side
    4,128.21x = 11,980,838.90
  5. Step 5: Solve for x
    x = 11,980,838.90/4,128.21
  6. Step 6: Final answer
    x = 2,902.19

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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.