Home / 7,728.31-10,664.70-4,371.61

Finding the Fourth Proportional to 7,728.31, 10,664.70 and 4,371.61

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Solution

The fourth proportional to 7,728.31, 10,664.70 and 4,371.61 is: 6,032.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728.31 : 10,664.70 = 4,371.61 : x
  2. Step 2: Convert to fraction form
    7,728.31/10,664.70 = 4,371.61/x
  3. Step 3: Cross multiply
    7,728.31x = 10,664.70 × 4,371.61
  4. Step 4: Simplify right side
    7,728.31x = 46,621,889.55
  5. Step 5: Solve for x
    x = 46,621,889.55/7,728.31
  6. Step 6: Final answer
    x = 6,032.61

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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.