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Finding the Fourth Proportional to 6,681.05, 10,020.21 and 4,220.68

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Solution

The fourth proportional to 6,681.05, 10,020.21 and 4,220.68 is: 6,330.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,681.05 : 10,020.21 = 4,220.68 : x
  2. Step 2: Convert to fraction form
    6,681.05/10,020.21 = 4,220.68/x
  3. Step 3: Cross multiply
    6,681.05x = 10,020.21 × 4,220.68
  4. Step 4: Simplify right side
    6,681.05x = 42,292,099.94
  5. Step 5: Solve for x
    x = 42,292,099.94/6,681.05
  6. Step 6: Final answer
    x = 6,330.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.