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Finding the Fourth Proportional to 7,239.60, 10,854.54 and 2,854.80

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Solution

The fourth proportional to 7,239.60, 10,854.54 and 2,854.80 is: 4,280.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.60 : 10,854.54 = 2,854.80 : x
  2. Step 2: Convert to fraction form
    7,239.60/10,854.54 = 2,854.80/x
  3. Step 3: Cross multiply
    7,239.60x = 10,854.54 × 2,854.80
  4. Step 4: Simplify right side
    7,239.60x = 30,987,540.79
  5. Step 5: Solve for x
    x = 30,987,540.79/7,239.60
  6. Step 6: Final answer
    x = 4,280.28

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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.