Home / 8,261.40-12,392.70-3,331.08

Finding the Fourth Proportional to 8,261.40, 12,392.70 and 3,331.08

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Solution

The fourth proportional to 8,261.40, 12,392.70 and 3,331.08 is: 4,996.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,261.40 : 12,392.70 = 3,331.08 : x
  2. Step 2: Convert to fraction form
    8,261.40/12,392.70 = 3,331.08/x
  3. Step 3: Cross multiply
    8,261.40x = 12,392.70 × 3,331.08
  4. Step 4: Simplify right side
    8,261.40x = 41,281,075.12
  5. Step 5: Solve for x
    x = 41,281,075.12/8,261.40
  6. Step 6: Final answer
    x = 4,996.86

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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.