Home / 8,079.84-11,156.40-6,514.92

Finding the Fourth Proportional to 8,079.84, 11,156.40 and 6,514.92

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Solution

The fourth proportional to 8,079.84, 11,156.40 and 6,514.92 is: 8,995.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.84 : 11,156.40 = 6,514.92 : x
  2. Step 2: Convert to fraction form
    8,079.84/11,156.40 = 6,514.92/x
  3. Step 3: Cross multiply
    8,079.84x = 11,156.40 × 6,514.92
  4. Step 4: Simplify right side
    8,079.84x = 72,683,053.49
  5. Step 5: Solve for x
    x = 72,683,053.49/8,079.84
  6. Step 6: Final answer
    x = 8,995.61

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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.