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Finding the Fourth Proportional to 5,135.68, 7,698.66 and 1,670.50

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Solution

The fourth proportional to 5,135.68, 7,698.66 and 1,670.50 is: 2,504.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.68 : 7,698.66 = 1,670.50 : x
  2. Step 2: Convert to fraction form
    5,135.68/7,698.66 = 1,670.50/x
  3. Step 3: Cross multiply
    5,135.68x = 7,698.66 × 1,670.50
  4. Step 4: Simplify right side
    5,135.68x = 12,860,611.53
  5. Step 5: Solve for x
    x = 12,860,611.53/5,135.68
  6. Step 6: Final answer
    x = 2,504.17

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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.