Home / 7,780.12-10,736.54-4,243.34

Finding the Fourth Proportional to 7,780.12, 10,736.54 and 4,243.34

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Solution

The fourth proportional to 7,780.12, 10,736.54 and 4,243.34 is: 5,855.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.12 : 10,736.54 = 4,243.34 : x
  2. Step 2: Convert to fraction form
    7,780.12/10,736.54 = 4,243.34/x
  3. Step 3: Cross multiply
    7,780.12x = 10,736.54 × 4,243.34
  4. Step 4: Simplify right side
    7,780.12x = 45,558,789.64
  5. Step 5: Solve for x
    x = 45,558,789.64/7,780.12
  6. Step 6: Final answer
    x = 5,855.80

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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.