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Finding the Fourth Proportional to 7,822.50, 10,795.05 and 4,285.85

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Solution

The fourth proportional to 7,822.50, 10,795.05 and 4,285.85 is: 5,914.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,822.50 : 10,795.05 = 4,285.85 : x
  2. Step 2: Convert to fraction form
    7,822.50/10,795.05 = 4,285.85/x
  3. Step 3: Cross multiply
    7,822.50x = 10,795.05 × 4,285.85
  4. Step 4: Simplify right side
    7,822.50x = 46,265,911.07
  5. Step 5: Solve for x
    x = 46,265,911.07/7,822.50
  6. Step 6: Final answer
    x = 5,914.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.