Home / 1,855.80-2,563.61-1,689.75

Finding the Fourth Proportional to 1,855.80, 2,563.61 and 1,689.75

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Solution

The fourth proportional to 1,855.80, 2,563.61 and 1,689.75 is: 2,334.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.80 : 2,563.61 = 1,689.75 : x
  2. Step 2: Convert to fraction form
    1,855.80/2,563.61 = 1,689.75/x
  3. Step 3: Cross multiply
    1,855.80x = 2,563.61 × 1,689.75
  4. Step 4: Simplify right side
    1,855.80x = 4,331,851.55
  5. Step 5: Solve for x
    x = 4,331,851.55/1,855.80
  6. Step 6: Final answer
    x = 2,334.22

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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.