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Finding the Fourth Proportional to 5,272.40, 7,910.40 and 2,351.60

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Solution

The fourth proportional to 5,272.40, 7,910.40 and 2,351.60 is: 3,528.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,272.40 : 7,910.40 = 2,351.60 : x
  2. Step 2: Convert to fraction form
    5,272.40/7,910.40 = 2,351.60/x
  3. Step 3: Cross multiply
    5,272.40x = 7,910.40 × 2,351.60
  4. Step 4: Simplify right side
    5,272.40x = 18,602,096.64
  5. Step 5: Solve for x
    x = 18,602,096.64/5,272.40
  6. Step 6: Final answer
    x = 3,528.20

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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.