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Finding the Fourth Proportional to 2,348.72, 3,239.99 and 1,905.84

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Solution

The fourth proportional to 2,348.72, 3,239.99 and 1,905.84 is: 2,629.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,348.72 : 3,239.99 = 1,905.84 : x
  2. Step 2: Convert to fraction form
    2,348.72/3,239.99 = 1,905.84/x
  3. Step 3: Cross multiply
    2,348.72x = 3,239.99 × 1,905.84
  4. Step 4: Simplify right side
    2,348.72x = 6,174,893.01
  5. Step 5: Solve for x
    x = 6,174,893.01/2,348.72
  6. Step 6: Final answer
    x = 2,629.05

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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.