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Finding the Fourth Proportional to 7,747.79, 10,692.14 and 4,211.19

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Solution

The fourth proportional to 7,747.79, 10,692.14 and 4,211.19 is: 5,811.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,747.79 : 10,692.14 = 4,211.19 : x
  2. Step 2: Convert to fraction form
    7,747.79/10,692.14 = 4,211.19/x
  3. Step 3: Cross multiply
    7,747.79x = 10,692.14 × 4,211.19
  4. Step 4: Simplify right side
    7,747.79x = 45,026,611.99
  5. Step 5: Solve for x
    x = 45,026,611.99/7,747.79
  6. Step 6: Final answer
    x = 5,811.55

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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.