Home / 5,107.76-7,661.51-2,105.13

Finding the Fourth Proportional to 5,107.76, 7,661.51 and 2,105.13

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Solution

The fourth proportional to 5,107.76, 7,661.51 and 2,105.13 is: 3,157.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.76 : 7,661.51 = 2,105.13 : x
  2. Step 2: Convert to fraction form
    5,107.76/7,661.51 = 2,105.13/x
  3. Step 3: Cross multiply
    5,107.76x = 7,661.51 × 2,105.13
  4. Step 4: Simplify right side
    5,107.76x = 16,128,463.62
  5. Step 5: Solve for x
    x = 16,128,463.62/5,107.76
  6. Step 6: Final answer
    x = 3,157.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.