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Finding the Fourth Proportional to 2,908.48, 4,362.67 and 828.50

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Solution

The fourth proportional to 2,908.48, 4,362.67 and 828.50 is: 1,242.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.48 : 4,362.67 = 828.50 : x
  2. Step 2: Convert to fraction form
    2,908.48/4,362.67 = 828.50/x
  3. Step 3: Cross multiply
    2,908.48x = 4,362.67 × 828.50
  4. Step 4: Simplify right side
    2,908.48x = 3,614,482.29
  5. Step 5: Solve for x
    x = 3,614,482.29/2,908.48
  6. Step 6: Final answer
    x = 1,242.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.