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Finding the Fourth Proportional to 3,125.60, 4,683.60 and 2,712.80

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Solution

The fourth proportional to 3,125.60, 4,683.60 and 2,712.80 is: 4,065.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.60 : 4,683.60 = 2,712.80 : x
  2. Step 2: Convert to fraction form
    3,125.60/4,683.60 = 2,712.80/x
  3. Step 3: Cross multiply
    3,125.60x = 4,683.60 × 2,712.80
  4. Step 4: Simplify right side
    3,125.60x = 12,705,670.08
  5. Step 5: Solve for x
    x = 12,705,670.08/3,125.60
  6. Step 6: Final answer
    x = 4,065.03

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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.