Home / 7,780.16-10,736.68-4,243.30

Finding the Fourth Proportional to 7,780.16, 10,736.68 and 4,243.30

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Solution

The fourth proportional to 7,780.16, 10,736.68 and 4,243.30 is: 5,855.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.16 : 10,736.68 = 4,243.30 : x
  2. Step 2: Convert to fraction form
    7,780.16/10,736.68 = 4,243.30/x
  3. Step 3: Cross multiply
    7,780.16x = 10,736.68 × 4,243.30
  4. Step 4: Simplify right side
    7,780.16x = 45,558,954.24
  5. Step 5: Solve for x
    x = 45,558,954.24/7,780.16
  6. Step 6: Final answer
    x = 5,855.79

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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.