Home / 7,142.11-10,709.65-4,219.63

Finding the Fourth Proportional to 7,142.11, 10,709.65 and 4,219.63

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Solution

The fourth proportional to 7,142.11, 10,709.65 and 4,219.63 is: 6,327.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.11 : 10,709.65 = 4,219.63 : x
  2. Step 2: Convert to fraction form
    7,142.11/10,709.65 = 4,219.63/x
  3. Step 3: Cross multiply
    7,142.11x = 10,709.65 × 4,219.63
  4. Step 4: Simplify right side
    7,142.11x = 45,190,760.43
  5. Step 5: Solve for x
    x = 45,190,760.43/7,142.11
  6. Step 6: Final answer
    x = 6,327.37

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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.