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Finding the Fourth Proportional to 1,896.39, 2,840.43 and 970.35

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Solution

The fourth proportional to 1,896.39, 2,840.43 and 970.35 is: 1,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,896.39 : 2,840.43 = 970.35 : x
  2. Step 2: Convert to fraction form
    1,896.39/2,840.43 = 970.35/x
  3. Step 3: Cross multiply
    1,896.39x = 2,840.43 × 970.35
  4. Step 4: Simplify right side
    1,896.39x = 2,756,211.25
  5. Step 5: Solve for x
    x = 2,756,211.25/1,896.39
  6. Step 6: Final answer
    x = 1,453.40

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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.