Home / 3,119.92-4,307.72-1,942

Finding the Fourth Proportional to 3,119.92, 4,307.72 and 1,942

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Solution

The fourth proportional to 3,119.92, 4,307.72 and 1,942 is: 2,681.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.92 : 4,307.72 = 1,942 : x
  2. Step 2: Convert to fraction form
    3,119.92/4,307.72 = 1,942/x
  3. Step 3: Cross multiply
    3,119.92x = 4,307.72 × 1,942
  4. Step 4: Simplify right side
    3,119.92x = 8,365,592.24
  5. Step 5: Solve for x
    x = 8,365,592.24/3,119.92
  6. Step 6: Final answer
    x = 2,681.35

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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.