Home / 8,315.10-11,474.67-4,778.22

Finding the Fourth Proportional to 8,315.10, 11,474.67 and 4,778.22

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Solution

The fourth proportional to 8,315.10, 11,474.67 and 4,778.22 is: 6,593.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.10 : 11,474.67 = 4,778.22 : x
  2. Step 2: Convert to fraction form
    8,315.10/11,474.67 = 4,778.22/x
  3. Step 3: Cross multiply
    8,315.10x = 11,474.67 × 4,778.22
  4. Step 4: Simplify right side
    8,315.10x = 54,828,497.69
  5. Step 5: Solve for x
    x = 54,828,497.69/8,315.10
  6. Step 6: Final answer
    x = 6,593.85

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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.