Home / 1,948.38-2,908.34-1,690.20

Finding the Fourth Proportional to 1,948.38, 2,908.34 and 1,690.20

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Solution

The fourth proportional to 1,948.38, 2,908.34 and 1,690.20 is: 2,522.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.38 : 2,908.34 = 1,690.20 : x
  2. Step 2: Convert to fraction form
    1,948.38/2,908.34 = 1,690.20/x
  3. Step 3: Cross multiply
    1,948.38x = 2,908.34 × 1,690.20
  4. Step 4: Simplify right side
    1,948.38x = 4,915,676.27
  5. Step 5: Solve for x
    x = 4,915,676.27/1,948.38
  6. Step 6: Final answer
    x = 2,522.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.