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Finding the Fourth Proportional to 3,038.82, 4,195.40 and 1,992.71

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Solution

The fourth proportional to 3,038.82, 4,195.40 and 1,992.71 is: 2,751.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,038.82 : 4,195.40 = 1,992.71 : x
  2. Step 2: Convert to fraction form
    3,038.82/4,195.40 = 1,992.71/x
  3. Step 3: Cross multiply
    3,038.82x = 4,195.40 × 1,992.71
  4. Step 4: Simplify right side
    3,038.82x = 8,360,184.59
  5. Step 5: Solve for x
    x = 8,360,184.59/3,038.82
  6. Step 6: Final answer
    x = 2,751.13

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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.