Home / 7,712.28-10,647.84-4,880.88

Finding the Fourth Proportional to 7,712.28, 10,647.84 and 4,880.88

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Solution

The fourth proportional to 7,712.28, 10,647.84 and 4,880.88 is: 6,738.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,712.28 : 10,647.84 = 4,880.88 : x
  2. Step 2: Convert to fraction form
    7,712.28/10,647.84 = 4,880.88/x
  3. Step 3: Cross multiply
    7,712.28x = 10,647.84 × 4,880.88
  4. Step 4: Simplify right side
    7,712.28x = 51,970,829.30
  5. Step 5: Solve for x
    x = 51,970,829.30/7,712.28
  6. Step 6: Final answer
    x = 6,738.71

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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.