Home / 3,631.80-5,447.70-3,430.20

Finding the Fourth Proportional to 3,631.80, 5,447.70 and 3,430.20

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Solution

The fourth proportional to 3,631.80, 5,447.70 and 3,430.20 is: 5,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,631.80 : 5,447.70 = 3,430.20 : x
  2. Step 2: Convert to fraction form
    3,631.80/5,447.70 = 3,430.20/x
  3. Step 3: Cross multiply
    3,631.80x = 5,447.70 × 3,430.20
  4. Step 4: Simplify right side
    3,631.80x = 18,686,700.54
  5. Step 5: Solve for x
    x = 18,686,700.54/3,631.80
  6. Step 6: Final answer
    x = 5,145.30

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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.