Home / 7,780.05-10,736.28-4,243.14

Finding the Fourth Proportional to 7,780.05, 10,736.28 and 4,243.14

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Solution

The fourth proportional to 7,780.05, 10,736.28 and 4,243.14 is: 5,855.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.05 : 10,736.28 = 4,243.14 : x
  2. Step 2: Convert to fraction form
    7,780.05/10,736.28 = 4,243.14/x
  3. Step 3: Cross multiply
    7,780.05x = 10,736.28 × 4,243.14
  4. Step 4: Simplify right side
    7,780.05x = 45,555,539.12
  5. Step 5: Solve for x
    x = 45,555,539.12/7,780.05
  6. Step 6: Final answer
    x = 5,855.43

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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.