Home / 4,279.48-5,905.62-3,005.20

Finding the Fourth Proportional to 4,279.48, 5,905.62 and 3,005.20

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Solution

The fourth proportional to 4,279.48, 5,905.62 and 3,005.20 is: 4,147.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.48 : 5,905.62 = 3,005.20 : x
  2. Step 2: Convert to fraction form
    4,279.48/5,905.62 = 3,005.20/x
  3. Step 3: Cross multiply
    4,279.48x = 5,905.62 × 3,005.20
  4. Step 4: Simplify right side
    4,279.48x = 17,747,569.22
  5. Step 5: Solve for x
    x = 17,747,569.22/4,279.48
  6. Step 6: Final answer
    x = 4,147.13

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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.