Home / 3,124.20-4,686.30-1,274.09

Finding the Fourth Proportional to 3,124.20, 4,686.30 and 1,274.09

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Solution

The fourth proportional to 3,124.20, 4,686.30 and 1,274.09 is: 1,911.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.20 : 4,686.30 = 1,274.09 : x
  2. Step 2: Convert to fraction form
    3,124.20/4,686.30 = 1,274.09/x
  3. Step 3: Cross multiply
    3,124.20x = 4,686.30 × 1,274.09
  4. Step 4: Simplify right side
    3,124.20x = 5,970,767.97
  5. Step 5: Solve for x
    x = 5,970,767.97/3,124.20
  6. Step 6: Final answer
    x = 1,911.14

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1.5x scale

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.