Home / 7,712.08-11,512.30-6,777.92

Finding the Fourth Proportional to 7,712.08, 11,512.30 and 6,777.92

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Solution

The fourth proportional to 7,712.08, 11,512.30 and 6,777.92 is: 10,117.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,712.08 : 11,512.30 = 6,777.92 : x
  2. Step 2: Convert to fraction form
    7,712.08/11,512.30 = 6,777.92/x
  3. Step 3: Cross multiply
    7,712.08x = 11,512.30 × 6,777.92
  4. Step 4: Simplify right side
    7,712.08x = 78,029,448.42
  5. Step 5: Solve for x
    x = 78,029,448.42/7,712.08
  6. Step 6: Final answer
    x = 10,117.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.