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Finding the Fourth Proportional to 3,080.69, 4,621.04 and 859.43

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Solution

The fourth proportional to 3,080.69, 4,621.04 and 859.43 is: 1,289.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.69 : 4,621.04 = 859.43 : x
  2. Step 2: Convert to fraction form
    3,080.69/4,621.04 = 859.43/x
  3. Step 3: Cross multiply
    3,080.69x = 4,621.04 × 859.43
  4. Step 4: Simplify right side
    3,080.69x = 3,971,461.89
  5. Step 5: Solve for x
    x = 3,971,461.89/3,080.69
  6. Step 6: Final answer
    x = 1,289.15

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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.