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Finding the Fourth Proportional to 7,047.21, 9,722.78 and 4,062.98

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Solution

The fourth proportional to 7,047.21, 9,722.78 and 4,062.98 is: 5,605.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,047.21 : 9,722.78 = 4,062.98 : x
  2. Step 2: Convert to fraction form
    7,047.21/9,722.78 = 4,062.98/x
  3. Step 3: Cross multiply
    7,047.21x = 9,722.78 × 4,062.98
  4. Step 4: Simplify right side
    7,047.21x = 39,503,391.76
  5. Step 5: Solve for x
    x = 39,503,391.76/7,047.21
  6. Step 6: Final answer
    x = 5,605.54

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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.