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Finding the Fourth Proportional to 7,133.44, 10,692.16 and 3,430.40

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Solution

The fourth proportional to 7,133.44, 10,692.16 and 3,430.40 is: 5,141.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,133.44 : 10,692.16 = 3,430.40 : x
  2. Step 2: Convert to fraction form
    7,133.44/10,692.16 = 3,430.40/x
  3. Step 3: Cross multiply
    7,133.44x = 10,692.16 × 3,430.40
  4. Step 4: Simplify right side
    7,133.44x = 36,678,385.66
  5. Step 5: Solve for x
    x = 36,678,385.66/7,133.44
  6. Step 6: Final answer
    x = 5,141.75

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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.