Home / 8,505.14-12,740.43-4,392.50

Finding the Fourth Proportional to 8,505.14, 12,740.43 and 4,392.50

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Solution

The fourth proportional to 8,505.14, 12,740.43 and 4,392.50 is: 6,579.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505.14 : 12,740.43 = 4,392.50 : x
  2. Step 2: Convert to fraction form
    8,505.14/12,740.43 = 4,392.50/x
  3. Step 3: Cross multiply
    8,505.14x = 12,740.43 × 4,392.50
  4. Step 4: Simplify right side
    8,505.14x = 55,962,338.78
  5. Step 5: Solve for x
    x = 55,962,338.78/8,505.14
  6. Step 6: Final answer
    x = 6,579.83

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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.