Home / 1,271.10-1,906.60-346.62

Finding the Fourth Proportional to 1,271.10, 1,906.60 and 346.62

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Solution

The fourth proportional to 1,271.10, 1,906.60 and 346.62 is: 519.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.10 : 1,906.60 = 346.62 : x
  2. Step 2: Convert to fraction form
    1,271.10/1,906.60 = 346.62/x
  3. Step 3: Cross multiply
    1,271.10x = 1,906.60 × 346.62
  4. Step 4: Simplify right side
    1,271.10x = 660,865.69
  5. Step 5: Solve for x
    x = 660,865.69/1,271.10
  6. Step 6: Final answer
    x = 519.92

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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.