Home / 5,105.15-7,045.09-2,982.14

Finding the Fourth Proportional to 5,105.15, 7,045.09 and 2,982.14

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Solution

The fourth proportional to 5,105.15, 7,045.09 and 2,982.14 is: 4,115.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.15 : 7,045.09 = 2,982.14 : x
  2. Step 2: Convert to fraction form
    5,105.15/7,045.09 = 2,982.14/x
  3. Step 3: Cross multiply
    5,105.15x = 7,045.09 × 2,982.14
  4. Step 4: Simplify right side
    5,105.15x = 21,009,409.47
  5. Step 5: Solve for x
    x = 21,009,409.47/5,105.15
  6. Step 6: Final answer
    x = 4,115.34

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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.