Home / 9,726.06-13,421.44-5,745.72

Finding the Fourth Proportional to 9,726.06, 13,421.44 and 5,745.72

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Solution

The fourth proportional to 9,726.06, 13,421.44 and 5,745.72 is: 7,928.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,726.06 : 13,421.44 = 5,745.72 : x
  2. Step 2: Convert to fraction form
    9,726.06/13,421.44 = 5,745.72/x
  3. Step 3: Cross multiply
    9,726.06x = 13,421.44 × 5,745.72
  4. Step 4: Simplify right side
    9,726.06x = 77,115,821.87
  5. Step 5: Solve for x
    x = 77,115,821.87/9,726.06
  6. Step 6: Final answer
    x = 7,928.78

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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.