Home / 8,333.20-12,499.80-3,400.30

Finding the Fourth Proportional to 8,333.20, 12,499.80 and 3,400.30

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Solution

The fourth proportional to 8,333.20, 12,499.80 and 3,400.30 is: 5,100.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,333.20 : 12,499.80 = 3,400.30 : x
  2. Step 2: Convert to fraction form
    8,333.20/12,499.80 = 3,400.30/x
  3. Step 3: Cross multiply
    8,333.20x = 12,499.80 × 3,400.30
  4. Step 4: Simplify right side
    8,333.20x = 42,503,069.94
  5. Step 5: Solve for x
    x = 42,503,069.94/8,333.20
  6. Step 6: Final answer
    x = 5,100.45

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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.