Home / 7,919.85-10,929.42-4,383.09

Finding the Fourth Proportional to 7,919.85, 10,929.42 and 4,383.09

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Solution

The fourth proportional to 7,919.85, 10,929.42 and 4,383.09 is: 6,048.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.85 : 10,929.42 = 4,383.09 : x
  2. Step 2: Convert to fraction form
    7,919.85/10,929.42 = 4,383.09/x
  3. Step 3: Cross multiply
    7,919.85x = 10,929.42 × 4,383.09
  4. Step 4: Simplify right side
    7,919.85x = 47,904,631.51
  5. Step 5: Solve for x
    x = 47,904,631.51/7,919.85
  6. Step 6: Final answer
    x = 6,048.68

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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.