Home / 7,965.07-10,991.80-4,428.97

Finding the Fourth Proportional to 7,965.07, 10,991.80 and 4,428.97

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Solution

The fourth proportional to 7,965.07, 10,991.80 and 4,428.97 is: 6,111.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,965.07 : 10,991.80 = 4,428.97 : x
  2. Step 2: Convert to fraction form
    7,965.07/10,991.80 = 4,428.97/x
  3. Step 3: Cross multiply
    7,965.07x = 10,991.80 × 4,428.97
  4. Step 4: Simplify right side
    7,965.07x = 48,682,330.50
  5. Step 5: Solve for x
    x = 48,682,330.50/7,965.07
  6. Step 6: Final answer
    x = 6,111.98

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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.