Home / 4,128.90-6,191.52-1,938.25

Finding the Fourth Proportional to 4,128.90, 6,191.52 and 1,938.25

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Solution

The fourth proportional to 4,128.90, 6,191.52 and 1,938.25 is: 2,906.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.90 : 6,191.52 = 1,938.25 : x
  2. Step 2: Convert to fraction form
    4,128.90/6,191.52 = 1,938.25/x
  3. Step 3: Cross multiply
    4,128.90x = 6,191.52 × 1,938.25
  4. Step 4: Simplify right side
    4,128.90x = 12,000,713.64
  5. Step 5: Solve for x
    x = 12,000,713.64/4,128.90
  6. Step 6: Final answer
    x = 2,906.52

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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.