Home / 7,391.12-11,043.38-7,132.74

Finding the Fourth Proportional to 7,391.12, 11,043.38 and 7,132.74

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Solution

The fourth proportional to 7,391.12, 11,043.38 and 7,132.74 is: 10,657.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,391.12 : 11,043.38 = 7,132.74 : x
  2. Step 2: Convert to fraction form
    7,391.12/11,043.38 = 7,132.74/x
  3. Step 3: Cross multiply
    7,391.12x = 11,043.38 × 7,132.74
  4. Step 4: Simplify right side
    7,391.12x = 78,769,558.26
  5. Step 5: Solve for x
    x = 78,769,558.26/7,391.12
  6. Step 6: Final answer
    x = 10,657.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.