Home / 2,121.68-2,926.77-1,623.62

Finding the Fourth Proportional to 2,121.68, 2,926.77 and 1,623.62

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Solution

The fourth proportional to 2,121.68, 2,926.77 and 1,623.62 is: 2,239.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.68 : 2,926.77 = 1,623.62 : x
  2. Step 2: Convert to fraction form
    2,121.68/2,926.77 = 1,623.62/x
  3. Step 3: Cross multiply
    2,121.68x = 2,926.77 × 1,623.62
  4. Step 4: Simplify right side
    2,121.68x = 4,751,962.31
  5. Step 5: Solve for x
    x = 4,751,962.31/2,121.68
  6. Step 6: Final answer
    x = 2,239.72

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1.5x scale

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.