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Finding the Fourth Proportional to 3,465.78, 4,782.79 and 1,893.91

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Solution

The fourth proportional to 3,465.78, 4,782.79 and 1,893.91 is: 2,613.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,465.78 : 4,782.79 = 1,893.91 : x
  2. Step 2: Convert to fraction form
    3,465.78/4,782.79 = 1,893.91/x
  3. Step 3: Cross multiply
    3,465.78x = 4,782.79 × 1,893.91
  4. Step 4: Simplify right side
    3,465.78x = 9,058,164.22
  5. Step 5: Solve for x
    x = 9,058,164.22/3,465.78
  6. Step 6: Final answer
    x = 2,613.60

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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.