Home / 8,542.27-12,795.39-5,420.63

Finding the Fourth Proportional to 8,542.27, 12,795.39 and 5,420.63

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Solution

The fourth proportional to 8,542.27, 12,795.39 and 5,420.63 is: 8,119.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,542.27 : 12,795.39 = 5,420.63 : x
  2. Step 2: Convert to fraction form
    8,542.27/12,795.39 = 5,420.63/x
  3. Step 3: Cross multiply
    8,542.27x = 12,795.39 × 5,420.63
  4. Step 4: Simplify right side
    8,542.27x = 69,359,010.92
  5. Step 5: Solve for x
    x = 69,359,010.92/8,542.27
  6. Step 6: Final answer
    x = 8,119.51

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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.