Home / 2,685.51-4,028.91-1,124.65

Finding the Fourth Proportional to 2,685.51, 4,028.91 and 1,124.65

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Solution

The fourth proportional to 2,685.51, 4,028.91 and 1,124.65 is: 1,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.51 : 4,028.91 = 1,124.65 : x
  2. Step 2: Convert to fraction form
    2,685.51/4,028.91 = 1,124.65/x
  3. Step 3: Cross multiply
    2,685.51x = 4,028.91 × 1,124.65
  4. Step 4: Simplify right side
    2,685.51x = 4,531,113.63
  5. Step 5: Solve for x
    x = 4,531,113.63/2,685.51
  6. Step 6: Final answer
    x = 1,687.25

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1.5x scale

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.