Home / 1,928.21-2,897.07-1,235.15

Finding the Fourth Proportional to 1,928.21, 2,897.07 and 1,235.15

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Solution

The fourth proportional to 1,928.21, 2,897.07 and 1,235.15 is: 1,855.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.21 : 2,897.07 = 1,235.15 : x
  2. Step 2: Convert to fraction form
    1,928.21/2,897.07 = 1,235.15/x
  3. Step 3: Cross multiply
    1,928.21x = 2,897.07 × 1,235.15
  4. Step 4: Simplify right side
    1,928.21x = 3,578,307.76
  5. Step 5: Solve for x
    x = 3,578,307.76/1,928.21
  6. Step 6: Final answer
    x = 1,855.77

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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.