Home / 8,142.93-12,215.86-2,880.99

Finding the Fourth Proportional to 8,142.93, 12,215.86 and 2,880.99

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Solution

The fourth proportional to 8,142.93, 12,215.86 and 2,880.99 is: 4,322.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.93 : 12,215.86 = 2,880.99 : x
  2. Step 2: Convert to fraction form
    8,142.93/12,215.86 = 2,880.99/x
  3. Step 3: Cross multiply
    8,142.93x = 12,215.86 × 2,880.99
  4. Step 4: Simplify right side
    8,142.93x = 35,193,770.50
  5. Step 5: Solve for x
    x = 35,193,770.50/8,142.93
  6. Step 6: Final answer
    x = 4,322.00

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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.