Home / 1,909.77-2,629.60-1,672.35

Finding the Fourth Proportional to 1,909.77, 2,629.60 and 1,672.35

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Solution

The fourth proportional to 1,909.77, 2,629.60 and 1,672.35 is: 2,302.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.77 : 2,629.60 = 1,672.35 : x
  2. Step 2: Convert to fraction form
    1,909.77/2,629.60 = 1,672.35/x
  3. Step 3: Cross multiply
    1,909.77x = 2,629.60 × 1,672.35
  4. Step 4: Simplify right side
    1,909.77x = 4,397,611.56
  5. Step 5: Solve for x
    x = 4,397,611.56/1,909.77
  6. Step 6: Final answer
    x = 2,302.69

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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.