Home / 7,965.52-10,992.44-4,428.78

Finding the Fourth Proportional to 7,965.52, 10,992.44 and 4,428.78

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Solution

The fourth proportional to 7,965.52, 10,992.44 and 4,428.78 is: 6,111.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,965.52 : 10,992.44 = 4,428.78 : x
  2. Step 2: Convert to fraction form
    7,965.52/10,992.44 = 4,428.78/x
  3. Step 3: Cross multiply
    7,965.52x = 10,992.44 × 4,428.78
  4. Step 4: Simplify right side
    7,965.52x = 48,683,098.42
  5. Step 5: Solve for x
    x = 48,683,098.42/7,965.52
  6. Step 6: Final answer
    x = 6,111.73

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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.