Home / 3,611-4,985.61-2,216.18

Finding the Fourth Proportional to 3,611, 4,985.61 and 2,216.18

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Solution

The fourth proportional to 3,611, 4,985.61 and 2,216.18 is: 3,059.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611 : 4,985.61 = 2,216.18 : x
  2. Step 2: Convert to fraction form
    3,611/4,985.61 = 2,216.18/x
  3. Step 3: Cross multiply
    3,611x = 4,985.61 × 2,216.18
  4. Step 4: Simplify right side
    3,611x = 11,049,009.17
  5. Step 5: Solve for x
    x = 11,049,009.17/3,611
  6. Step 6: Final answer
    x = 3,059.82

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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.