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Finding the Fourth Proportional to 4,786.51, 6,605.13 and 2,690.50

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Solution

The fourth proportional to 4,786.51, 6,605.13 and 2,690.50 is: 3,712.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.51 : 6,605.13 = 2,690.50 : x
  2. Step 2: Convert to fraction form
    4,786.51/6,605.13 = 2,690.50/x
  3. Step 3: Cross multiply
    4,786.51x = 6,605.13 × 2,690.50
  4. Step 4: Simplify right side
    4,786.51x = 17,771,102.27
  5. Step 5: Solve for x
    x = 17,771,102.27/4,786.51
  6. Step 6: Final answer
    x = 3,712.75

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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.