Home / 4,253.12-6,378.60-1,911.80

Finding the Fourth Proportional to 4,253.12, 6,378.60 and 1,911.80

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Solution

The fourth proportional to 4,253.12, 6,378.60 and 1,911.80 is: 2,867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,253.12 : 6,378.60 = 1,911.80 : x
  2. Step 2: Convert to fraction form
    4,253.12/6,378.60 = 1,911.80/x
  3. Step 3: Cross multiply
    4,253.12x = 6,378.60 × 1,911.80
  4. Step 4: Simplify right side
    4,253.12x = 12,194,607.48
  5. Step 5: Solve for x
    x = 12,194,607.48/4,253.12
  6. Step 6: Final answer
    x = 2,867.21

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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.