Home / 7,718.08-11,521.24-6,783.92

Finding the Fourth Proportional to 7,718.08, 11,521.24 and 6,783.92

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Solution

The fourth proportional to 7,718.08, 11,521.24 and 6,783.92 is: 10,126.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.08 : 11,521.24 = 6,783.92 : x
  2. Step 2: Convert to fraction form
    7,718.08/11,521.24 = 6,783.92/x
  3. Step 3: Cross multiply
    7,718.08x = 11,521.24 × 6,783.92
  4. Step 4: Simplify right side
    7,718.08x = 78,159,170.46
  5. Step 5: Solve for x
    x = 78,159,170.46/7,718.08
  6. Step 6: Final answer
    x = 10,126.76

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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.