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Finding the Fourth Proportional to 10,650.60, 15,975.90 and 2,860.20

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Solution

The fourth proportional to 10,650.60, 15,975.90 and 2,860.20 is: 4,290.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,650.60 : 15,975.90 = 2,860.20 : x
  2. Step 2: Convert to fraction form
    10,650.60/15,975.90 = 2,860.20/x
  3. Step 3: Cross multiply
    10,650.60x = 15,975.90 × 2,860.20
  4. Step 4: Simplify right side
    10,650.60x = 45,694,269.18
  5. Step 5: Solve for x
    x = 45,694,269.18/10,650.60
  6. Step 6: Final answer
    x = 4,290.30

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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.