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Finding the Fourth Proportional to 10,602.60, 15,903.90 and 3,208.20

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Solution

The fourth proportional to 10,602.60, 15,903.90 and 3,208.20 is: 4,812.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,602.60 : 15,903.90 = 3,208.20 : x
  2. Step 2: Convert to fraction form
    10,602.60/15,903.90 = 3,208.20/x
  3. Step 3: Cross multiply
    10,602.60x = 15,903.90 × 3,208.20
  4. Step 4: Simplify right side
    10,602.60x = 51,022,891.98
  5. Step 5: Solve for x
    x = 51,022,891.98/10,602.60
  6. Step 6: Final answer
    x = 4,812.30

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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.