Home / 7,965.09-10,992.78-4,821.30

Finding the Fourth Proportional to 7,965.09, 10,992.78 and 4,821.30

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Solution

The fourth proportional to 7,965.09, 10,992.78 and 4,821.30 is: 6,653.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,965.09 : 10,992.78 = 4,821.30 : x
  2. Step 2: Convert to fraction form
    7,965.09/10,992.78 = 4,821.30/x
  3. Step 3: Cross multiply
    7,965.09x = 10,992.78 × 4,821.30
  4. Step 4: Simplify right side
    7,965.09x = 52,999,490.21
  5. Step 5: Solve for x
    x = 52,999,490.21/7,965.09
  6. Step 6: Final answer
    x = 6,653.97

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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.