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Finding the Fourth Proportional to 1,908.91, 2,858.47 and 1,600

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Solution

The fourth proportional to 1,908.91, 2,858.47 and 1,600 is: 2,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.91 : 2,858.47 = 1,600 : x
  2. Step 2: Convert to fraction form
    1,908.91/2,858.47 = 1,600/x
  3. Step 3: Cross multiply
    1,908.91x = 2,858.47 × 1,600
  4. Step 4: Simplify right side
    1,908.91x = 4,573,552
  5. Step 5: Solve for x
    x = 4,573,552/1,908.91
  6. Step 6: Final answer
    x = 2,395.90

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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.