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Finding the Fourth Proportional to 4,645, 6,410.91 and 2,782

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Solution

The fourth proportional to 4,645, 6,410.91 and 2,782 is: 3,839.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,645 : 6,410.91 = 2,782 : x
  2. Step 2: Convert to fraction form
    4,645/6,410.91 = 2,782/x
  3. Step 3: Cross multiply
    4,645x = 6,410.91 × 2,782
  4. Step 4: Simplify right side
    4,645x = 17,835,151.62
  5. Step 5: Solve for x
    x = 17,835,151.62/4,645
  6. Step 6: Final answer
    x = 3,839.65

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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.