Home / 6,405.84-8,841.24-3,611.34

Finding the Fourth Proportional to 6,405.84, 8,841.24 and 3,611.34

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Solution

The fourth proportional to 6,405.84, 8,841.24 and 3,611.34 is: 4,984.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.84 : 8,841.24 = 3,611.34 : x
  2. Step 2: Convert to fraction form
    6,405.84/8,841.24 = 3,611.34/x
  3. Step 3: Cross multiply
    6,405.84x = 8,841.24 × 3,611.34
  4. Step 4: Simplify right side
    6,405.84x = 31,928,723.66
  5. Step 5: Solve for x
    x = 31,928,723.66/6,405.84
  6. Step 6: Final answer
    x = 4,984.31

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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.