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Finding the Fourth Proportional to 4,690.50, 7,035.75 and 1,612.50

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Solution

The fourth proportional to 4,690.50, 7,035.75 and 1,612.50 is: 2,418.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,690.50 : 7,035.75 = 1,612.50 : x
  2. Step 2: Convert to fraction form
    4,690.50/7,035.75 = 1,612.50/x
  3. Step 3: Cross multiply
    4,690.50x = 7,035.75 × 1,612.50
  4. Step 4: Simplify right side
    4,690.50x = 11,345,146.88
  5. Step 5: Solve for x
    x = 11,345,146.88/4,690.50
  6. Step 6: Final answer
    x = 2,418.75

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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.