Home / 7,280.32-10,920.42-2,086.20

Finding the Fourth Proportional to 7,280.32, 10,920.42 and 2,086.20

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Solution

The fourth proportional to 7,280.32, 10,920.42 and 2,086.20 is: 3,129.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.32 : 10,920.42 = 2,086.20 : x
  2. Step 2: Convert to fraction form
    7,280.32/10,920.42 = 2,086.20/x
  3. Step 3: Cross multiply
    7,280.32x = 10,920.42 × 2,086.20
  4. Step 4: Simplify right side
    7,280.32x = 22,782,180.20
  5. Step 5: Solve for x
    x = 22,782,180.20/7,280.32
  6. Step 6: Final answer
    x = 3,129.28

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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.