Home / 7,728.39-10,665.03-4,371.09

Finding the Fourth Proportional to 7,728.39, 10,665.03 and 4,371.09

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Solution

The fourth proportional to 7,728.39, 10,665.03 and 4,371.09 is: 6,032.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728.39 : 10,665.03 = 4,371.09 : x
  2. Step 2: Convert to fraction form
    7,728.39/10,665.03 = 4,371.09/x
  3. Step 3: Cross multiply
    7,728.39x = 10,665.03 × 4,371.09
  4. Step 4: Simplify right side
    7,728.39x = 46,617,805.98
  5. Step 5: Solve for x
    x = 46,617,805.98/7,728.39
  6. Step 6: Final answer
    x = 6,032.02

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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.