Home / 1,721.45-2,375.60-935.49

Finding the Fourth Proportional to 1,721.45, 2,375.60 and 935.49

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Solution

The fourth proportional to 1,721.45, 2,375.60 and 935.49 is: 1,290.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.45 : 2,375.60 = 935.49 : x
  2. Step 2: Convert to fraction form
    1,721.45/2,375.60 = 935.49/x
  3. Step 3: Cross multiply
    1,721.45x = 2,375.60 × 935.49
  4. Step 4: Simplify right side
    1,721.45x = 2,222,345.37
  5. Step 5: Solve for x
    x = 2,222,345.37/1,721.45
  6. Step 6: Final answer
    x = 1,290.98

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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.