Home / 1,738.52-2,607.80-1,391.40

Finding the Fourth Proportional to 1,738.52, 2,607.80 and 1,391.40

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Solution

The fourth proportional to 1,738.52, 2,607.80 and 1,391.40 is: 2,087.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738.52 : 2,607.80 = 1,391.40 : x
  2. Step 2: Convert to fraction form
    1,738.52/2,607.80 = 1,391.40/x
  3. Step 3: Cross multiply
    1,738.52x = 2,607.80 × 1,391.40
  4. Step 4: Simplify right side
    1,738.52x = 3,628,499.44
  5. Step 5: Solve for x
    x = 3,628,499.44/1,738.52
  6. Step 6: Final answer
    x = 2,087.12

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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.