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Finding the Fourth Proportional to 7,698.58, 11,547.87 and 3,080.50

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Solution

The fourth proportional to 7,698.58, 11,547.87 and 3,080.50 is: 4,620.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,698.58 : 11,547.87 = 3,080.50 : x
  2. Step 2: Convert to fraction form
    7,698.58/11,547.87 = 3,080.50/x
  3. Step 3: Cross multiply
    7,698.58x = 11,547.87 × 3,080.50
  4. Step 4: Simplify right side
    7,698.58x = 35,573,213.54
  5. Step 5: Solve for x
    x = 35,573,213.54/7,698.58
  6. Step 6: Final answer
    x = 4,620.75

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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.