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Finding the Fourth Proportional to 1,990.38, 2,747.04 and 1,925.63

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Solution

The fourth proportional to 1,990.38, 2,747.04 and 1,925.63 is: 2,657.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.38 : 2,747.04 = 1,925.63 : x
  2. Step 2: Convert to fraction form
    1,990.38/2,747.04 = 1,925.63/x
  3. Step 3: Cross multiply
    1,990.38x = 2,747.04 × 1,925.63
  4. Step 4: Simplify right side
    1,990.38x = 5,289,782.64
  5. Step 5: Solve for x
    x = 5,289,782.64/1,990.38
  6. Step 6: Final answer
    x = 2,657.67

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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.