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Finding the Fourth Proportional to 2,620.04, 3,929.04 and 1,059.64

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Solution

The fourth proportional to 2,620.04, 3,929.04 and 1,059.64 is: 1,589.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.04 : 3,929.04 = 1,059.64 : x
  2. Step 2: Convert to fraction form
    2,620.04/3,929.04 = 1,059.64/x
  3. Step 3: Cross multiply
    2,620.04x = 3,929.04 × 1,059.64
  4. Step 4: Simplify right side
    2,620.04x = 4,163,358.12
  5. Step 5: Solve for x
    x = 4,163,358.12/2,620.04
  6. Step 6: Final answer
    x = 1,589.05

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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.