Home / 7,708.87-10,638.27-4,172.08

Finding the Fourth Proportional to 7,708.87, 10,638.27 and 4,172.08

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Solution

The fourth proportional to 7,708.87, 10,638.27 and 4,172.08 is: 5,757.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,708.87 : 10,638.27 = 4,172.08 : x
  2. Step 2: Convert to fraction form
    7,708.87/10,638.27 = 4,172.08/x
  3. Step 3: Cross multiply
    7,708.87x = 10,638.27 × 4,172.08
  4. Step 4: Simplify right side
    7,708.87x = 44,383,713.50
  5. Step 5: Solve for x
    x = 44,383,713.50/7,708.87
  6. Step 6: Final answer
    x = 5,757.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.