Home / 3,255.21-4,877.78-1,521.81

Finding the Fourth Proportional to 3,255.21, 4,877.78 and 1,521.81

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Solution

The fourth proportional to 3,255.21, 4,877.78 and 1,521.81 is: 2,280.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,255.21 : 4,877.78 = 1,521.81 : x
  2. Step 2: Convert to fraction form
    3,255.21/4,877.78 = 1,521.81/x
  3. Step 3: Cross multiply
    3,255.21x = 4,877.78 × 1,521.81
  4. Step 4: Simplify right side
    3,255.21x = 7,423,046.77
  5. Step 5: Solve for x
    x = 7,423,046.77/3,255.21
  6. Step 6: Final answer
    x = 2,280.36

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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.