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Finding the Fourth Proportional to 2,878.53, 3,971.88 and 1,699.98

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Solution

The fourth proportional to 2,878.53, 3,971.88 and 1,699.98 is: 2,345.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.53 : 3,971.88 = 1,699.98 : x
  2. Step 2: Convert to fraction form
    2,878.53/3,971.88 = 1,699.98/x
  3. Step 3: Cross multiply
    2,878.53x = 3,971.88 × 1,699.98
  4. Step 4: Simplify right side
    2,878.53x = 6,752,116.56
  5. Step 5: Solve for x
    x = 6,752,116.56/2,878.53
  6. Step 6: Final answer
    x = 2,345.68

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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.