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Finding the Fourth Proportional to 6,308.81, 8,706.16 and 3,657.76

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Solution

The fourth proportional to 6,308.81, 8,706.16 and 3,657.76 is: 5,047.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,308.81 : 8,706.16 = 3,657.76 : x
  2. Step 2: Convert to fraction form
    6,308.81/8,706.16 = 3,657.76/x
  3. Step 3: Cross multiply
    6,308.81x = 8,706.16 × 3,657.76
  4. Step 4: Simplify right side
    6,308.81x = 31,845,043.80
  5. Step 5: Solve for x
    x = 31,845,043.80/6,308.81
  6. Step 6: Final answer
    x = 5,047.71

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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.