Home / 7,780.11-10,736.37-4,243.35

Finding the Fourth Proportional to 7,780.11, 10,736.37 and 4,243.35

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Solution

The fourth proportional to 7,780.11, 10,736.37 and 4,243.35 is: 5,855.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.11 : 10,736.37 = 4,243.35 : x
  2. Step 2: Convert to fraction form
    7,780.11/10,736.37 = 4,243.35/x
  3. Step 3: Cross multiply
    7,780.11x = 10,736.37 × 4,243.35
  4. Step 4: Simplify right side
    7,780.11x = 45,558,175.64
  5. Step 5: Solve for x
    x = 45,558,175.64/7,780.11
  6. Step 6: Final answer
    x = 5,855.72

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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.