Home / 5,318.96-7,979.40-2,398.64

Finding the Fourth Proportional to 5,318.96, 7,979.40 and 2,398.64

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Solution

The fourth proportional to 5,318.96, 7,979.40 and 2,398.64 is: 3,598.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.96 : 7,979.40 = 2,398.64 : x
  2. Step 2: Convert to fraction form
    5,318.96/7,979.40 = 2,398.64/x
  3. Step 3: Cross multiply
    5,318.96x = 7,979.40 × 2,398.64
  4. Step 4: Simplify right side
    5,318.96x = 19,139,708.02
  5. Step 5: Solve for x
    x = 19,139,708.02/5,318.96
  6. Step 6: Final answer
    x = 3,598.39

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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.