Home / 1,224.20-1,836.40-346.71

Finding the Fourth Proportional to 1,224.20, 1,836.40 and 346.71

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Solution

The fourth proportional to 1,224.20, 1,836.40 and 346.71 is: 520.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.20 : 1,836.40 = 346.71 : x
  2. Step 2: Convert to fraction form
    1,224.20/1,836.40 = 346.71/x
  3. Step 3: Cross multiply
    1,224.20x = 1,836.40 × 346.71
  4. Step 4: Simplify right side
    1,224.20x = 636,698.24
  5. Step 5: Solve for x
    x = 636,698.24/1,224.20
  6. Step 6: Final answer
    x = 520.09

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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.