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Finding the Fourth Proportional to 3,129.69, 4,694.72 and 1,049.61

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Solution

The fourth proportional to 3,129.69, 4,694.72 and 1,049.61 is: 1,574.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.69 : 4,694.72 = 1,049.61 : x
  2. Step 2: Convert to fraction form
    3,129.69/4,694.72 = 1,049.61/x
  3. Step 3: Cross multiply
    3,129.69x = 4,694.72 × 1,049.61
  4. Step 4: Simplify right side
    3,129.69x = 4,927,619.81
  5. Step 5: Solve for x
    x = 4,927,619.81/3,129.69
  6. Step 6: Final answer
    x = 1,574.48

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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.