Home / 8,157.87-12,237.11-2,611.40

Finding the Fourth Proportional to 8,157.87, 12,237.11 and 2,611.40

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Solution

The fourth proportional to 8,157.87, 12,237.11 and 2,611.40 is: 3,917.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157.87 : 12,237.11 = 2,611.40 : x
  2. Step 2: Convert to fraction form
    8,157.87/12,237.11 = 2,611.40/x
  3. Step 3: Cross multiply
    8,157.87x = 12,237.11 × 2,611.40
  4. Step 4: Simplify right side
    8,157.87x = 31,955,914.81
  5. Step 5: Solve for x
    x = 31,955,914.81/8,157.87
  6. Step 6: Final answer
    x = 3,917.19

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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.