Home / 1,623.21-2,239.02-1,225.50

Finding the Fourth Proportional to 1,623.21, 2,239.02 and 1,225.50

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Solution

The fourth proportional to 1,623.21, 2,239.02 and 1,225.50 is: 1,690.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.21 : 2,239.02 = 1,225.50 : x
  2. Step 2: Convert to fraction form
    1,623.21/2,239.02 = 1,225.50/x
  3. Step 3: Cross multiply
    1,623.21x = 2,239.02 × 1,225.50
  4. Step 4: Simplify right side
    1,623.21x = 2,743,919.01
  5. Step 5: Solve for x
    x = 2,743,919.01/1,623.21
  6. Step 6: Final answer
    x = 1,690.43

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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.