Home / 7,200.29-10,800.43-4,120.13

Finding the Fourth Proportional to 7,200.29, 10,800.43 and 4,120.13

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Solution

The fourth proportional to 7,200.29, 10,800.43 and 4,120.13 is: 6,180.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.29 : 10,800.43 = 4,120.13 : x
  2. Step 2: Convert to fraction form
    7,200.29/10,800.43 = 4,120.13/x
  3. Step 3: Cross multiply
    7,200.29x = 10,800.43 × 4,120.13
  4. Step 4: Simplify right side
    7,200.29x = 44,499,175.66
  5. Step 5: Solve for x
    x = 44,499,175.66/7,200.29
  6. Step 6: Final answer
    x = 6,180.19

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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.