Home / 2,318.78-3,200-1,270.84

Finding the Fourth Proportional to 2,318.78, 3,200 and 1,270.84

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Solution

The fourth proportional to 2,318.78, 3,200 and 1,270.84 is: 1,753.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,318.78 : 3,200 = 1,270.84 : x
  2. Step 2: Convert to fraction form
    2,318.78/3,200 = 1,270.84/x
  3. Step 3: Cross multiply
    2,318.78x = 3,200 × 1,270.84
  4. Step 4: Simplify right side
    2,318.78x = 4,066,688.00
  5. Step 5: Solve for x
    x = 4,066,688.00/2,318.78
  6. Step 6: Final answer
    x = 1,753.81

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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.