Home / 7,728.18-10,664.88-4,191.36

Finding the Fourth Proportional to 7,728.18, 10,664.88 and 4,191.36

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Solution

The fourth proportional to 7,728.18, 10,664.88 and 4,191.36 is: 5,784.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728.18 : 10,664.88 = 4,191.36 : x
  2. Step 2: Convert to fraction form
    7,728.18/10,664.88 = 4,191.36/x
  3. Step 3: Cross multiply
    7,728.18x = 10,664.88 × 4,191.36
  4. Step 4: Simplify right side
    7,728.18x = 44,700,351.44
  5. Step 5: Solve for x
    x = 44,700,351.44/7,728.18
  6. Step 6: Final answer
    x = 5,784.07

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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.