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Finding the Fourth Proportional to 6,602.60, 9,911.10 and 4,140.20

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Solution

The fourth proportional to 6,602.60, 9,911.10 and 4,140.20 is: 6,214.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,602.60 : 9,911.10 = 4,140.20 : x
  2. Step 2: Convert to fraction form
    6,602.60/9,911.10 = 4,140.20/x
  3. Step 3: Cross multiply
    6,602.60x = 9,911.10 × 4,140.20
  4. Step 4: Simplify right side
    6,602.60x = 41,033,936.22
  5. Step 5: Solve for x
    x = 41,033,936.22/6,602.60
  6. Step 6: Final answer
    x = 6,214.81

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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.