Home / 7,611.20-11,417.92-2,680.64

Finding the Fourth Proportional to 7,611.20, 11,417.92 and 2,680.64

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Solution

The fourth proportional to 7,611.20, 11,417.92 and 2,680.64 is: 4,021.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,611.20 : 11,417.92 = 2,680.64 : x
  2. Step 2: Convert to fraction form
    7,611.20/11,417.92 = 2,680.64/x
  3. Step 3: Cross multiply
    7,611.20x = 11,417.92 × 2,680.64
  4. Step 4: Simplify right side
    7,611.20x = 30,607,333.07
  5. Step 5: Solve for x
    x = 30,607,333.07/7,611.20
  6. Step 6: Final answer
    x = 4,021.35

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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.