Home / 8,135.57-12,205.15-3,459.58

Finding the Fourth Proportional to 8,135.57, 12,205.15 and 3,459.58

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Solution

The fourth proportional to 8,135.57, 12,205.15 and 3,459.58 is: 5,190.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.57 : 12,205.15 = 3,459.58 : x
  2. Step 2: Convert to fraction form
    8,135.57/12,205.15 = 3,459.58/x
  3. Step 3: Cross multiply
    8,135.57x = 12,205.15 × 3,459.58
  4. Step 4: Simplify right side
    8,135.57x = 42,224,692.84
  5. Step 5: Solve for x
    x = 42,224,692.84/8,135.57
  6. Step 6: Final answer
    x = 5,190.13

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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.