Home / 2,380.89-3,285.51-1,318.58

Finding the Fourth Proportional to 2,380.89, 3,285.51 and 1,318.58

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Solution

The fourth proportional to 2,380.89, 3,285.51 and 1,318.58 is: 1,819.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,380.89 : 3,285.51 = 1,318.58 : x
  2. Step 2: Convert to fraction form
    2,380.89/3,285.51 = 1,318.58/x
  3. Step 3: Cross multiply
    2,380.89x = 3,285.51 × 1,318.58
  4. Step 4: Simplify right side
    2,380.89x = 4,332,206.14
  5. Step 5: Solve for x
    x = 4,332,206.14/2,380.89
  6. Step 6: Final answer
    x = 1,819.58

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1.5x scale

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.