Home / 4,486.40-6,729.92-1,408.64

Finding the Fourth Proportional to 4,486.40, 6,729.92 and 1,408.64

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Solution

The fourth proportional to 4,486.40, 6,729.92 and 1,408.64 is: 2,113.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,486.40 : 6,729.92 = 1,408.64 : x
  2. Step 2: Convert to fraction form
    4,486.40/6,729.92 = 1,408.64/x
  3. Step 3: Cross multiply
    4,486.40x = 6,729.92 × 1,408.64
  4. Step 4: Simplify right side
    4,486.40x = 9,480,034.51
  5. Step 5: Solve for x
    x = 9,480,034.51/4,486.40
  6. Step 6: Final answer
    x = 2,113.06

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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.