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Finding the Fourth Proportional to 7,279.16, 10,043.94 and 4,135.16

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Solution

The fourth proportional to 7,279.16, 10,043.94 and 4,135.16 is: 5,705.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.16 : 10,043.94 = 4,135.16 : x
  2. Step 2: Convert to fraction form
    7,279.16/10,043.94 = 4,135.16/x
  3. Step 3: Cross multiply
    7,279.16x = 10,043.94 × 4,135.16
  4. Step 4: Simplify right side
    7,279.16x = 41,533,298.93
  5. Step 5: Solve for x
    x = 41,533,298.93/7,279.16
  6. Step 6: Final answer
    x = 5,705.78

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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.