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Finding the Fourth Proportional to 5,658.37, 8,479.78 and 4,270.57

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Solution

The fourth proportional to 5,658.37, 8,479.78 and 4,270.57 is: 6,399.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,658.37 : 8,479.78 = 4,270.57 : x
  2. Step 2: Convert to fraction form
    5,658.37/8,479.78 = 4,270.57/x
  3. Step 3: Cross multiply
    5,658.37x = 8,479.78 × 4,270.57
  4. Step 4: Simplify right side
    5,658.37x = 36,213,494.07
  5. Step 5: Solve for x
    x = 36,213,494.07/5,658.37
  6. Step 6: Final answer
    x = 6,399.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.