Home / 3,119.67-4,305.53-2,000.20

Finding the Fourth Proportional to 3,119.67, 4,305.53 and 2,000.20

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Solution

The fourth proportional to 3,119.67, 4,305.53 and 2,000.20 is: 2,760.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.67 : 4,305.53 = 2,000.20 : x
  2. Step 2: Convert to fraction form
    3,119.67/4,305.53 = 2,000.20/x
  3. Step 3: Cross multiply
    3,119.67x = 4,305.53 × 2,000.20
  4. Step 4: Simplify right side
    3,119.67x = 8,611,915.34
  5. Step 5: Solve for x
    x = 8,611,915.34/3,119.67
  6. Step 6: Final answer
    x = 2,760.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.