Home / 7,965.12-10,991.84-4,428.33

Finding the Fourth Proportional to 7,965.12, 10,991.84 and 4,428.33

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Solution

The fourth proportional to 7,965.12, 10,991.84 and 4,428.33 is: 6,111.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,965.12 : 10,991.84 = 4,428.33 : x
  2. Step 2: Convert to fraction form
    7,965.12/10,991.84 = 4,428.33/x
  3. Step 3: Cross multiply
    7,965.12x = 10,991.84 × 4,428.33
  4. Step 4: Simplify right side
    7,965.12x = 48,675,494.83
  5. Step 5: Solve for x
    x = 48,675,494.83/7,965.12
  6. Step 6: Final answer
    x = 6,111.08

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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.