Home / 7,781.70-10,738.68-4,245.13

Finding the Fourth Proportional to 7,781.70, 10,738.68 and 4,245.13

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Solution

The fourth proportional to 7,781.70, 10,738.68 and 4,245.13 is: 5,858.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.70 : 10,738.68 = 4,245.13 : x
  2. Step 2: Convert to fraction form
    7,781.70/10,738.68 = 4,245.13/x
  3. Step 3: Cross multiply
    7,781.70x = 10,738.68 × 4,245.13
  4. Step 4: Simplify right side
    7,781.70x = 45,587,092.63
  5. Step 5: Solve for x
    x = 45,587,092.63/7,781.70
  6. Step 6: Final answer
    x = 5,858.24

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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.