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Finding the Fourth Proportional to 7,244.60, 10,866.90 and 2,859.80

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Solution

The fourth proportional to 7,244.60, 10,866.90 and 2,859.80 is: 4,289.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,244.60 : 10,866.90 = 2,859.80 : x
  2. Step 2: Convert to fraction form
    7,244.60/10,866.90 = 2,859.80/x
  3. Step 3: Cross multiply
    7,244.60x = 10,866.90 × 2,859.80
  4. Step 4: Simplify right side
    7,244.60x = 31,077,160.62
  5. Step 5: Solve for x
    x = 31,077,160.62/7,244.60
  6. Step 6: Final answer
    x = 4,289.70

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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.