Home / 8,315.45-11,475.21-4,778.58

Finding the Fourth Proportional to 8,315.45, 11,475.21 and 4,778.58

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Solution

The fourth proportional to 8,315.45, 11,475.21 and 4,778.58 is: 6,594.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.45 : 11,475.21 = 4,778.58 : x
  2. Step 2: Convert to fraction form
    8,315.45/11,475.21 = 4,778.58/x
  3. Step 3: Cross multiply
    8,315.45x = 11,475.21 × 4,778.58
  4. Step 4: Simplify right side
    8,315.45x = 54,835,209.00
  5. Step 5: Solve for x
    x = 54,835,209.00/8,315.45
  6. Step 6: Final answer
    x = 6,594.38

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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.