Home / 6,405.81-9,611.68-2,708.90

Finding the Fourth Proportional to 6,405.81, 9,611.68 and 2,708.90

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Solution

The fourth proportional to 6,405.81, 9,611.68 and 2,708.90 is: 4,064.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.81 : 9,611.68 = 2,708.90 : x
  2. Step 2: Convert to fraction form
    6,405.81/9,611.68 = 2,708.90/x
  3. Step 3: Cross multiply
    6,405.81x = 9,611.68 × 2,708.90
  4. Step 4: Simplify right side
    6,405.81x = 26,037,079.95
  5. Step 5: Solve for x
    x = 26,037,079.95/6,405.81
  6. Step 6: Final answer
    x = 4,064.60

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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.