Home / 7,477.38-10,319.37-4,120.80

Finding the Fourth Proportional to 7,477.38, 10,319.37 and 4,120.80

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Solution

The fourth proportional to 7,477.38, 10,319.37 and 4,120.80 is: 5,687.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.38 : 10,319.37 = 4,120.80 : x
  2. Step 2: Convert to fraction form
    7,477.38/10,319.37 = 4,120.80/x
  3. Step 3: Cross multiply
    7,477.38x = 10,319.37 × 4,120.80
  4. Step 4: Simplify right side
    7,477.38x = 42,524,059.90
  5. Step 5: Solve for x
    x = 42,524,059.90/7,477.38
  6. Step 6: Final answer
    x = 5,687.03

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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.