Home / 5,286.08-7,930.80-2,820.80

Finding the Fourth Proportional to 5,286.08, 7,930.80 and 2,820.80

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Solution

The fourth proportional to 5,286.08, 7,930.80 and 2,820.80 is: 4,232.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.08 : 7,930.80 = 2,820.80 : x
  2. Step 2: Convert to fraction form
    5,286.08/7,930.80 = 2,820.80/x
  3. Step 3: Cross multiply
    5,286.08x = 7,930.80 × 2,820.80
  4. Step 4: Simplify right side
    5,286.08x = 22,371,200.64
  5. Step 5: Solve for x
    x = 22,371,200.64/5,286.08
  6. Step 6: Final answer
    x = 4,232.10

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1.5x scale

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.