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Finding the Fourth Proportional to 8,437.99, 11,645.43 and 6,200.63

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Solution

The fourth proportional to 8,437.99, 11,645.43 and 6,200.63 is: 8,557.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,437.99 : 11,645.43 = 6,200.63 : x
  2. Step 2: Convert to fraction form
    8,437.99/11,645.43 = 6,200.63/x
  3. Step 3: Cross multiply
    8,437.99x = 11,645.43 × 6,200.63
  4. Step 4: Simplify right side
    8,437.99x = 72,209,002.62
  5. Step 5: Solve for x
    x = 72,209,002.62/8,437.99
  6. Step 6: Final answer
    x = 8,557.61

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Half scale
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Double scale
Find fourth proportional to 8,438.99, 11,646.81 and 6,201.63
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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.