Home / 5,639.33-7,780.49-3,281.02

Finding the Fourth Proportional to 5,639.33, 7,780.49 and 3,281.02

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Solution

The fourth proportional to 5,639.33, 7,780.49 and 3,281.02 is: 4,526.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.33 : 7,780.49 = 3,281.02 : x
  2. Step 2: Convert to fraction form
    5,639.33/7,780.49 = 3,281.02/x
  3. Step 3: Cross multiply
    5,639.33x = 7,780.49 × 3,281.02
  4. Step 4: Simplify right side
    5,639.33x = 25,527,930.76
  5. Step 5: Solve for x
    x = 25,527,930.76/5,639.33
  6. Step 6: Final answer
    x = 4,526.76

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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.