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Finding the Fourth Proportional to 1,672.96, 2,509.62 and 1,479.76

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Solution

The fourth proportional to 1,672.96, 2,509.62 and 1,479.76 is: 2,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.96 : 2,509.62 = 1,479.76 : x
  2. Step 2: Convert to fraction form
    1,672.96/2,509.62 = 1,479.76/x
  3. Step 3: Cross multiply
    1,672.96x = 2,509.62 × 1,479.76
  4. Step 4: Simplify right side
    1,672.96x = 3,713,635.29
  5. Step 5: Solve for x
    x = 3,713,635.29/1,672.96
  6. Step 6: Final answer
    x = 2,219.80

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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.