Home / 3,055.90-4,217.72-1,938.12

Finding the Fourth Proportional to 3,055.90, 4,217.72 and 1,938.12

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Solution

The fourth proportional to 3,055.90, 4,217.72 and 1,938.12 is: 2,674.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,055.90 : 4,217.72 = 1,938.12 : x
  2. Step 2: Convert to fraction form
    3,055.90/4,217.72 = 1,938.12/x
  3. Step 3: Cross multiply
    3,055.90x = 4,217.72 × 1,938.12
  4. Step 4: Simplify right side
    3,055.90x = 8,174,447.49
  5. Step 5: Solve for x
    x = 8,174,447.49/3,055.90
  6. Step 6: Final answer
    x = 2,674.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.