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Finding the Fourth Proportional to 8,460.40, 12,692.40 and 3,266.24

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Solution

The fourth proportional to 8,460.40, 12,692.40 and 3,266.24 is: 4,900.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,460.40 : 12,692.40 = 3,266.24 : x
  2. Step 2: Convert to fraction form
    8,460.40/12,692.40 = 3,266.24/x
  3. Step 3: Cross multiply
    8,460.40x = 12,692.40 × 3,266.24
  4. Step 4: Simplify right side
    8,460.40x = 41,456,424.58
  5. Step 5: Solve for x
    x = 41,456,424.58/8,460.40
  6. Step 6: Final answer
    x = 4,900.05

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1.5x scale

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.