Home / 3,119.93-4,302-2,125.79

Finding the Fourth Proportional to 3,119.93, 4,302 and 2,125.79

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Solution

The fourth proportional to 3,119.93, 4,302 and 2,125.79 is: 2,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.93 : 4,302 = 2,125.79 : x
  2. Step 2: Convert to fraction form
    3,119.93/4,302 = 2,125.79/x
  3. Step 3: Cross multiply
    3,119.93x = 4,302 × 2,125.79
  4. Step 4: Simplify right side
    3,119.93x = 9,145,127.07
  5. Step 5: Solve for x
    x = 9,145,127.07/3,119.93
  6. Step 6: Final answer
    x = 2,931.20

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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.