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Finding the Fourth Proportional to 1,467.92, 2,025.41 and 878.65

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Solution

The fourth proportional to 1,467.92, 2,025.41 and 878.65 is: 1,212.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,467.92 : 2,025.41 = 878.65 : x
  2. Step 2: Convert to fraction form
    1,467.92/2,025.41 = 878.65/x
  3. Step 3: Cross multiply
    1,467.92x = 2,025.41 × 878.65
  4. Step 4: Simplify right side
    1,467.92x = 1,779,617.04
  5. Step 5: Solve for x
    x = 1,779,617.04/1,467.92
  6. Step 6: Final answer
    x = 1,212.34

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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.