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Finding the Fourth Proportional to 7,555, 10,428.42 and 4,760.56

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Solution

The fourth proportional to 7,555, 10,428.42 and 4,760.56 is: 6,571.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,555 : 10,428.42 = 4,760.56 : x
  2. Step 2: Convert to fraction form
    7,555/10,428.42 = 4,760.56/x
  3. Step 3: Cross multiply
    7,555x = 10,428.42 × 4,760.56
  4. Step 4: Simplify right side
    7,555x = 49,645,119.12
  5. Step 5: Solve for x
    x = 49,645,119.12/7,555
  6. Step 6: Final answer
    x = 6,571.16

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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.