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Finding the Fourth Proportional to 7,052.40, 10,571.40 and 4,129.20

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Solution

The fourth proportional to 7,052.40, 10,571.40 and 4,129.20 is: 6,189.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,052.40 : 10,571.40 = 4,129.20 : x
  2. Step 2: Convert to fraction form
    7,052.40/10,571.40 = 4,129.20/x
  3. Step 3: Cross multiply
    7,052.40x = 10,571.40 × 4,129.20
  4. Step 4: Simplify right side
    7,052.40x = 43,651,424.88
  5. Step 5: Solve for x
    x = 43,651,424.88/7,052.40
  6. Step 6: Final answer
    x = 6,189.58

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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.