Home / 2,380.60-3,285.08-1,318.36

Finding the Fourth Proportional to 2,380.60, 3,285.08 and 1,318.36

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Solution

The fourth proportional to 2,380.60, 3,285.08 and 1,318.36 is: 1,819.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,380.60 : 3,285.08 = 1,318.36 : x
  2. Step 2: Convert to fraction form
    2,380.60/3,285.08 = 1,318.36/x
  3. Step 3: Cross multiply
    2,380.60x = 3,285.08 × 1,318.36
  4. Step 4: Simplify right side
    2,380.60x = 4,330,918.07
  5. Step 5: Solve for x
    x = 4,330,918.07/2,380.60
  6. Step 6: Final answer
    x = 1,819.25

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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.