Home / 5,310.78-7,328.68-2,920.73

Finding the Fourth Proportional to 5,310.78, 7,328.68 and 2,920.73

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Solution

The fourth proportional to 5,310.78, 7,328.68 and 2,920.73 is: 4,030.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,310.78 : 7,328.68 = 2,920.73 : x
  2. Step 2: Convert to fraction form
    5,310.78/7,328.68 = 2,920.73/x
  3. Step 3: Cross multiply
    5,310.78x = 7,328.68 × 2,920.73
  4. Step 4: Simplify right side
    5,310.78x = 21,405,121.16
  5. Step 5: Solve for x
    x = 21,405,121.16/5,310.78
  6. Step 6: Final answer
    x = 4,030.50

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1.5x scale

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.