Home / 8,315.65-11,475.57-4,778.61

Finding the Fourth Proportional to 8,315.65, 11,475.57 and 4,778.61

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Solution

The fourth proportional to 8,315.65, 11,475.57 and 4,778.61 is: 6,594.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.65 : 11,475.57 = 4,778.61 : x
  2. Step 2: Convert to fraction form
    8,315.65/11,475.57 = 4,778.61/x
  3. Step 3: Cross multiply
    8,315.65x = 11,475.57 × 4,778.61
  4. Step 4: Simplify right side
    8,315.65x = 54,837,273.56
  5. Step 5: Solve for x
    x = 54,837,273.56/8,315.65
  6. Step 6: Final answer
    x = 6,594.47

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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.