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Finding the Fourth Proportional to 3,037, 4,191.88 and 1,990.48

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Solution

The fourth proportional to 3,037, 4,191.88 and 1,990.48 is: 2,747.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,037 : 4,191.88 = 1,990.48 : x
  2. Step 2: Convert to fraction form
    3,037/4,191.88 = 1,990.48/x
  3. Step 3: Cross multiply
    3,037x = 4,191.88 × 1,990.48
  4. Step 4: Simplify right side
    3,037x = 8,343,853.30
  5. Step 5: Solve for x
    x = 8,343,853.30/3,037
  6. Step 6: Final answer
    x = 2,747.40

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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.