Home / 2,687.58-4,032.99-1,855.31

Finding the Fourth Proportional to 2,687.58, 4,032.99 and 1,855.31

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Solution

The fourth proportional to 2,687.58, 4,032.99 and 1,855.31 is: 2,784.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.58 : 4,032.99 = 1,855.31 : x
  2. Step 2: Convert to fraction form
    2,687.58/4,032.99 = 1,855.31/x
  3. Step 3: Cross multiply
    2,687.58x = 4,032.99 × 1,855.31
  4. Step 4: Simplify right side
    2,687.58x = 7,482,426.51
  5. Step 5: Solve for x
    x = 7,482,426.51/2,687.58
  6. Step 6: Final answer
    x = 2,784.08

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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.