Home / 4,881.21-7,320.39-2,800.86

Finding the Fourth Proportional to 4,881.21, 7,320.39 and 2,800.86

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Solution

The fourth proportional to 4,881.21, 7,320.39 and 2,800.86 is: 4,200.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.21 : 7,320.39 = 2,800.86 : x
  2. Step 2: Convert to fraction form
    4,881.21/7,320.39 = 2,800.86/x
  3. Step 3: Cross multiply
    4,881.21x = 7,320.39 × 2,800.86
  4. Step 4: Simplify right side
    4,881.21x = 20,503,387.54
  5. Step 5: Solve for x
    x = 20,503,387.54/4,881.21
  6. Step 6: Final answer
    x = 4,200.47

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1.5x scale

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.