Home / 7,728.82-10,665.68-4,192.00

Finding the Fourth Proportional to 7,728.82, 10,665.68 and 4,192.00

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Solution

The fourth proportional to 7,728.82, 10,665.68 and 4,192.00 is: 5,784.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728.82 : 10,665.68 = 4,192.00 : x
  2. Step 2: Convert to fraction form
    7,728.82/10,665.68 = 4,192.00/x
  3. Step 3: Cross multiply
    7,728.82x = 10,665.68 × 4,192.00
  4. Step 4: Simplify right side
    7,728.82x = 44,710,482.94
  5. Step 5: Solve for x
    x = 44,710,482.94/7,728.82
  6. Step 6: Final answer
    x = 5,784.91

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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.