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Finding the Fourth Proportional to 1,841.74, 2,763.64 and 1,431.70

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Solution

The fourth proportional to 1,841.74, 2,763.64 and 1,431.70 is: 2,148.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,841.74 : 2,763.64 = 1,431.70 : x
  2. Step 2: Convert to fraction form
    1,841.74/2,763.64 = 1,431.70/x
  3. Step 3: Cross multiply
    1,841.74x = 2,763.64 × 1,431.70
  4. Step 4: Simplify right side
    1,841.74x = 3,956,703.39
  5. Step 5: Solve for x
    x = 3,956,703.39/1,841.74
  6. Step 6: Final answer
    x = 2,148.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.