Home / 7,920.39-10,929.79-4,383.37

Finding the Fourth Proportional to 7,920.39, 10,929.79 and 4,383.37

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Solution

The fourth proportional to 7,920.39, 10,929.79 and 4,383.37 is: 6,048.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.39 : 10,929.79 = 4,383.37 : x
  2. Step 2: Convert to fraction form
    7,920.39/10,929.79 = 4,383.37/x
  3. Step 3: Cross multiply
    7,920.39x = 10,929.79 × 4,383.37
  4. Step 4: Simplify right side
    7,920.39x = 47,909,313.59
  5. Step 5: Solve for x
    x = 47,909,313.59/7,920.39
  6. Step 6: Final answer
    x = 6,048.86

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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.