Home / 5,214.50-7,821.67-1,265.79

Finding the Fourth Proportional to 5,214.50, 7,821.67 and 1,265.79

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Solution

The fourth proportional to 5,214.50, 7,821.67 and 1,265.79 is: 1,898.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,214.50 : 7,821.67 = 1,265.79 : x
  2. Step 2: Convert to fraction form
    5,214.50/7,821.67 = 1,265.79/x
  3. Step 3: Cross multiply
    5,214.50x = 7,821.67 × 1,265.79
  4. Step 4: Simplify right side
    5,214.50x = 9,900,588.50
  5. Step 5: Solve for x
    x = 9,900,588.50/5,214.50
  6. Step 6: Final answer
    x = 1,898.66

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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.