Home / 9,491.20-13,092.70-5,712.10

Finding the Fourth Proportional to 9,491.20, 13,092.70 and 5,712.10

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Solution

The fourth proportional to 9,491.20, 13,092.70 and 5,712.10 is: 7,879.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,491.20 : 13,092.70 = 5,712.10 : x
  2. Step 2: Convert to fraction form
    9,491.20/13,092.70 = 5,712.10/x
  3. Step 3: Cross multiply
    9,491.20x = 13,092.70 × 5,712.10
  4. Step 4: Simplify right side
    9,491.20x = 74,786,811.67
  5. Step 5: Solve for x
    x = 74,786,811.67/9,491.20
  6. Step 6: Final answer
    x = 7,879.59

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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.