Home / 8,438.29-11,648.76-4,900.81

Finding the Fourth Proportional to 8,438.29, 11,648.76 and 4,900.81

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Solution

The fourth proportional to 8,438.29, 11,648.76 and 4,900.81 is: 6,765.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.29 : 11,648.76 = 4,900.81 : x
  2. Step 2: Convert to fraction form
    8,438.29/11,648.76 = 4,900.81/x
  3. Step 3: Cross multiply
    8,438.29x = 11,648.76 × 4,900.81
  4. Step 4: Simplify right side
    8,438.29x = 57,088,359.50
  5. Step 5: Solve for x
    x = 57,088,359.50/8,438.29
  6. Step 6: Final answer
    x = 6,765.39

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Half scale
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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.