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Finding the Fourth Proportional to 6,316.70, 8,717.09 and 3,665.70

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Solution

The fourth proportional to 6,316.70, 8,717.09 and 3,665.70 is: 5,058.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,316.70 : 8,717.09 = 3,665.70 : x
  2. Step 2: Convert to fraction form
    6,316.70/8,717.09 = 3,665.70/x
  3. Step 3: Cross multiply
    6,316.70x = 8,717.09 × 3,665.70
  4. Step 4: Simplify right side
    6,316.70x = 31,954,236.81
  5. Step 5: Solve for x
    x = 31,954,236.81/6,316.70
  6. Step 6: Final answer
    x = 5,058.69

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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.