Home / 2,878.90-4,314.96-1,647.16

Finding the Fourth Proportional to 2,878.90, 4,314.96 and 1,647.16

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Solution

The fourth proportional to 2,878.90, 4,314.96 and 1,647.16 is: 2,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.90 : 4,314.96 = 1,647.16 : x
  2. Step 2: Convert to fraction form
    2,878.90/4,314.96 = 1,647.16/x
  3. Step 3: Cross multiply
    2,878.90x = 4,314.96 × 1,647.16
  4. Step 4: Simplify right side
    2,878.90x = 7,107,418.73
  5. Step 5: Solve for x
    x = 7,107,418.73/2,878.90
  6. Step 6: Final answer
    x = 2,468.80

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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.