Home / 2,619.18-3,611.10-2,145.33

Finding the Fourth Proportional to 2,619.18, 3,611.10 and 2,145.33

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Solution

The fourth proportional to 2,619.18, 3,611.10 and 2,145.33 is: 2,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.18 : 3,611.10 = 2,145.33 : x
  2. Step 2: Convert to fraction form
    2,619.18/3,611.10 = 2,145.33/x
  3. Step 3: Cross multiply
    2,619.18x = 3,611.10 × 2,145.33
  4. Step 4: Simplify right side
    2,619.18x = 7,747,001.16
  5. Step 5: Solve for x
    x = 7,747,001.16/2,619.18
  6. Step 6: Final answer
    x = 2,957.80

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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.