Home / 8,142.48-11,247.12-5,911.74

Finding the Fourth Proportional to 8,142.48, 11,247.12 and 5,911.74

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Solution

The fourth proportional to 8,142.48, 11,247.12 and 5,911.74 is: 8,165.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.48 : 11,247.12 = 5,911.74 : x
  2. Step 2: Convert to fraction form
    8,142.48/11,247.12 = 5,911.74/x
  3. Step 3: Cross multiply
    8,142.48x = 11,247.12 × 5,911.74
  4. Step 4: Simplify right side
    8,142.48x = 66,490,049.19
  5. Step 5: Solve for x
    x = 66,490,049.19/8,142.48
  6. Step 6: Final answer
    x = 8,165.82

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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.