Home / 7,728.84-10,665.80-4,192.04

Finding the Fourth Proportional to 7,728.84, 10,665.80 and 4,192.04

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Solution

The fourth proportional to 7,728.84, 10,665.80 and 4,192.04 is: 5,785.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728.84 : 10,665.80 = 4,192.04 : x
  2. Step 2: Convert to fraction form
    7,728.84/10,665.80 = 4,192.04/x
  3. Step 3: Cross multiply
    7,728.84x = 10,665.80 × 4,192.04
  4. Step 4: Simplify right side
    7,728.84x = 44,711,460.23
  5. Step 5: Solve for x
    x = 44,711,460.23/7,728.84
  6. Step 6: Final answer
    x = 5,785.02

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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.