Home / 2,611.56-3,913.68-1,877.68

Finding the Fourth Proportional to 2,611.56, 3,913.68 and 1,877.68

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Solution

The fourth proportional to 2,611.56, 3,913.68 and 1,877.68 is: 2,813.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.56 : 3,913.68 = 1,877.68 : x
  2. Step 2: Convert to fraction form
    2,611.56/3,913.68 = 1,877.68/x
  3. Step 3: Cross multiply
    2,611.56x = 3,913.68 × 1,877.68
  4. Step 4: Simplify right side
    2,611.56x = 7,348,638.66
  5. Step 5: Solve for x
    x = 7,348,638.66/2,611.56
  6. Step 6: Final answer
    x = 2,813.89

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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.