Home / 3,578.63-4,938.55-1,985.31

Finding the Fourth Proportional to 3,578.63, 4,938.55 and 1,985.31

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Solution

The fourth proportional to 3,578.63, 4,938.55 and 1,985.31 is: 2,739.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.63 : 4,938.55 = 1,985.31 : x
  2. Step 2: Convert to fraction form
    3,578.63/4,938.55 = 1,985.31/x
  3. Step 3: Cross multiply
    3,578.63x = 4,938.55 × 1,985.31
  4. Step 4: Simplify right side
    3,578.63x = 9,804,558.90
  5. Step 5: Solve for x
    x = 9,804,558.90/3,578.63
  6. Step 6: Final answer
    x = 2,739.75

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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.