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Finding the Fourth Proportional to 8,454.80, 12,692.60 and 5,334.80

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Solution

The fourth proportional to 8,454.80, 12,692.60 and 5,334.80 is: 8,008.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,454.80 : 12,692.60 = 5,334.80 : x
  2. Step 2: Convert to fraction form
    8,454.80/12,692.60 = 5,334.80/x
  3. Step 3: Cross multiply
    8,454.80x = 12,692.60 × 5,334.80
  4. Step 4: Simplify right side
    8,454.80x = 67,712,482.48
  5. Step 5: Solve for x
    x = 67,712,482.48/8,454.80
  6. Step 6: Final answer
    x = 8,008.76

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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.