Home / 7,708.88-10,638.26-4,172.08

Finding the Fourth Proportional to 7,708.88, 10,638.26 and 4,172.08

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Solution

The fourth proportional to 7,708.88, 10,638.26 and 4,172.08 is: 5,757.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,708.88 : 10,638.26 = 4,172.08 : x
  2. Step 2: Convert to fraction form
    7,708.88/10,638.26 = 4,172.08/x
  3. Step 3: Cross multiply
    7,708.88x = 10,638.26 × 4,172.08
  4. Step 4: Simplify right side
    7,708.88x = 44,383,671.78
  5. Step 5: Solve for x
    x = 44,383,671.78/7,708.88
  6. Step 6: Final answer
    x = 5,757.47

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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.