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Finding the Fourth Proportional to 6,458.57, 8,910.53 and 4,221.74

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Solution

The fourth proportional to 6,458.57, 8,910.53 and 4,221.74 is: 5,824.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,458.57 : 8,910.53 = 4,221.74 : x
  2. Step 2: Convert to fraction form
    6,458.57/8,910.53 = 4,221.74/x
  3. Step 3: Cross multiply
    6,458.57x = 8,910.53 × 4,221.74
  4. Step 4: Simplify right side
    6,458.57x = 37,617,940.92
  5. Step 5: Solve for x
    x = 37,617,940.92/6,458.57
  6. Step 6: Final answer
    x = 5,824.50

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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.