Home / 1,743.50-2,406.64-1,221.06

Finding the Fourth Proportional to 1,743.50, 2,406.64 and 1,221.06

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Solution

The fourth proportional to 1,743.50, 2,406.64 and 1,221.06 is: 1,685.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,743.50 : 2,406.64 = 1,221.06 : x
  2. Step 2: Convert to fraction form
    1,743.50/2,406.64 = 1,221.06/x
  3. Step 3: Cross multiply
    1,743.50x = 2,406.64 × 1,221.06
  4. Step 4: Simplify right side
    1,743.50x = 2,938,651.84
  5. Step 5: Solve for x
    x = 2,938,651.84/1,743.50
  6. Step 6: Final answer
    x = 1,685.49

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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.