Home / 4,122.42-6,185.66-1,931.31

Finding the Fourth Proportional to 4,122.42, 6,185.66 and 1,931.31

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Solution

The fourth proportional to 4,122.42, 6,185.66 and 1,931.31 is: 2,897.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,122.42 : 6,185.66 = 1,931.31 : x
  2. Step 2: Convert to fraction form
    4,122.42/6,185.66 = 1,931.31/x
  3. Step 3: Cross multiply
    4,122.42x = 6,185.66 × 1,931.31
  4. Step 4: Simplify right side
    4,122.42x = 11,946,417.36
  5. Step 5: Solve for x
    x = 11,946,417.36/4,122.42
  6. Step 6: Final answer
    x = 2,897.91

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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.