Home / 7,920.12-10,929.36-4,383.24

Finding the Fourth Proportional to 7,920.12, 10,929.36 and 4,383.24

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Solution

The fourth proportional to 7,920.12, 10,929.36 and 4,383.24 is: 6,048.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.12 : 10,929.36 = 4,383.24 : x
  2. Step 2: Convert to fraction form
    7,920.12/10,929.36 = 4,383.24/x
  3. Step 3: Cross multiply
    7,920.12x = 10,929.36 × 4,383.24
  4. Step 4: Simplify right side
    7,920.12x = 47,906,007.93
  5. Step 5: Solve for x
    x = 47,906,007.93/7,920.12
  6. Step 6: Final answer
    x = 6,048.65

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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.