Home / 5,129.76-7,694.72-1,619.63

Finding the Fourth Proportional to 5,129.76, 7,694.72 and 1,619.63

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Solution

The fourth proportional to 5,129.76, 7,694.72 and 1,619.63 is: 2,429.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.76 : 7,694.72 = 1,619.63 : x
  2. Step 2: Convert to fraction form
    5,129.76/7,694.72 = 1,619.63/x
  3. Step 3: Cross multiply
    5,129.76x = 7,694.72 × 1,619.63
  4. Step 4: Simplify right side
    5,129.76x = 12,462,552.78
  5. Step 5: Solve for x
    x = 12,462,552.78/5,129.76
  6. Step 6: Final answer
    x = 2,429.46

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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.