Home / 2,985.80-4,120.43-1,641.44

Finding the Fourth Proportional to 2,985.80, 4,120.43 and 1,641.44

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Solution

The fourth proportional to 2,985.80, 4,120.43 and 1,641.44 is: 2,265.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.80 : 4,120.43 = 1,641.44 : x
  2. Step 2: Convert to fraction form
    2,985.80/4,120.43 = 1,641.44/x
  3. Step 3: Cross multiply
    2,985.80x = 4,120.43 × 1,641.44
  4. Step 4: Simplify right side
    2,985.80x = 6,763,428.32
  5. Step 5: Solve for x
    x = 6,763,428.32/2,985.80
  6. Step 6: Final answer
    x = 2,265.20

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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.