Home / 5,214.58-7,821.87-1,318.99

Finding the Fourth Proportional to 5,214.58, 7,821.87 and 1,318.99

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Solution

The fourth proportional to 5,214.58, 7,821.87 and 1,318.99 is: 1,978.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,214.58 : 7,821.87 = 1,318.99 : x
  2. Step 2: Convert to fraction form
    5,214.58/7,821.87 = 1,318.99/x
  3. Step 3: Cross multiply
    5,214.58x = 7,821.87 × 1,318.99
  4. Step 4: Simplify right side
    5,214.58x = 10,316,934.15
  5. Step 5: Solve for x
    x = 10,316,934.15/5,214.58
  6. Step 6: Final answer
    x = 1,978.48

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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.