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Finding the Fourth Proportional to 4,692.80, 7,050.08 and 2,943.20

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Solution

The fourth proportional to 4,692.80, 7,050.08 and 2,943.20 is: 4,421.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,692.80 : 7,050.08 = 2,943.20 : x
  2. Step 2: Convert to fraction form
    4,692.80/7,050.08 = 2,943.20/x
  3. Step 3: Cross multiply
    4,692.80x = 7,050.08 × 2,943.20
  4. Step 4: Simplify right side
    4,692.80x = 20,749,795.46
  5. Step 5: Solve for x
    x = 20,749,795.46/4,692.80
  6. Step 6: Final answer
    x = 4,421.62

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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.