Home / 2,357.79-3,538.34-1,318.64

Finding the Fourth Proportional to 2,357.79, 3,538.34 and 1,318.64

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Solution

The fourth proportional to 2,357.79, 3,538.34 and 1,318.64 is: 1,978.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,357.79 : 3,538.34 = 1,318.64 : x
  2. Step 2: Convert to fraction form
    2,357.79/3,538.34 = 1,318.64/x
  3. Step 3: Cross multiply
    2,357.79x = 3,538.34 × 1,318.64
  4. Step 4: Simplify right side
    2,357.79x = 4,665,772.37
  5. Step 5: Solve for x
    x = 4,665,772.37/2,357.79
  6. Step 6: Final answer
    x = 1,978.88

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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.