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Finding the Fourth Proportional to 6,667.40, 10,001.10 and 6,618.80

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Solution

The fourth proportional to 6,667.40, 10,001.10 and 6,618.80 is: 9,928.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,667.40 : 10,001.10 = 6,618.80 : x
  2. Step 2: Convert to fraction form
    6,667.40/10,001.10 = 6,618.80/x
  3. Step 3: Cross multiply
    6,667.40x = 10,001.10 × 6,618.80
  4. Step 4: Simplify right side
    6,667.40x = 66,195,280.68
  5. Step 5: Solve for x
    x = 66,195,280.68/6,667.40
  6. Step 6: Final answer
    x = 9,928.20

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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.