Home / 8,429.77-11,636.79-5,447.05

Finding the Fourth Proportional to 8,429.77, 11,636.79 and 5,447.05

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Solution

The fourth proportional to 8,429.77, 11,636.79 and 5,447.05 is: 7,519.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.77 : 11,636.79 = 5,447.05 : x
  2. Step 2: Convert to fraction form
    8,429.77/11,636.79 = 5,447.05/x
  3. Step 3: Cross multiply
    8,429.77x = 11,636.79 × 5,447.05
  4. Step 4: Simplify right side
    8,429.77x = 63,386,176.97
  5. Step 5: Solve for x
    x = 63,386,176.97/8,429.77
  6. Step 6: Final answer
    x = 7,519.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.