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Finding the Fourth Proportional to 8,429.16, 12,692.78 and 6,253.32

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Solution

The fourth proportional to 8,429.16, 12,692.78 and 6,253.32 is: 9,416.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.16 : 12,692.78 = 6,253.32 : x
  2. Step 2: Convert to fraction form
    8,429.16/12,692.78 = 6,253.32/x
  3. Step 3: Cross multiply
    8,429.16x = 12,692.78 × 6,253.32
  4. Step 4: Simplify right side
    8,429.16x = 79,372,015.03
  5. Step 5: Solve for x
    x = 79,372,015.03/8,429.16
  6. Step 6: Final answer
    x = 9,416.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.