Home / 4,065.40-5,611.20-2,886.84

Finding the Fourth Proportional to 4,065.40, 5,611.20 and 2,886.84

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Solution

The fourth proportional to 4,065.40, 5,611.20 and 2,886.84 is: 3,984.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,065.40 : 5,611.20 = 2,886.84 : x
  2. Step 2: Convert to fraction form
    4,065.40/5,611.20 = 2,886.84/x
  3. Step 3: Cross multiply
    4,065.40x = 5,611.20 × 2,886.84
  4. Step 4: Simplify right side
    4,065.40x = 16,198,636.61
  5. Step 5: Solve for x
    x = 16,198,636.61/4,065.40
  6. Step 6: Final answer
    x = 3,984.51

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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.