Home / 6,315.15-8,717.31-4,747.80

Finding the Fourth Proportional to 6,315.15, 8,717.31 and 4,747.80

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Solution

The fourth proportional to 6,315.15, 8,717.31 and 4,747.80 is: 6,553.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,315.15 : 8,717.31 = 4,747.80 : x
  2. Step 2: Convert to fraction form
    6,315.15/8,717.31 = 4,747.80/x
  3. Step 3: Cross multiply
    6,315.15x = 8,717.31 × 4,747.80
  4. Step 4: Simplify right side
    6,315.15x = 41,388,044.42
  5. Step 5: Solve for x
    x = 41,388,044.42/6,315.15
  6. Step 6: Final answer
    x = 6,553.77

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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.