Home / 2,618.45-3,611.84-1,871.10

Finding the Fourth Proportional to 2,618.45, 3,611.84 and 1,871.10

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Solution

The fourth proportional to 2,618.45, 3,611.84 and 1,871.10 is: 2,580.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.45 : 3,611.84 = 1,871.10 : x
  2. Step 2: Convert to fraction form
    2,618.45/3,611.84 = 1,871.10/x
  3. Step 3: Cross multiply
    2,618.45x = 3,611.84 × 1,871.10
  4. Step 4: Simplify right side
    2,618.45x = 6,758,113.82
  5. Step 5: Solve for x
    x = 6,758,113.82/2,618.45
  6. Step 6: Final answer
    x = 2,580.96

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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.