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Finding the Fourth Proportional to 1,467.80, 2,026.20 and 878.22

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Solution

The fourth proportional to 1,467.80, 2,026.20 and 878.22 is: 1,212.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,467.80 : 2,026.20 = 878.22 : x
  2. Step 2: Convert to fraction form
    1,467.80/2,026.20 = 878.22/x
  3. Step 3: Cross multiply
    1,467.80x = 2,026.20 × 878.22
  4. Step 4: Simplify right side
    1,467.80x = 1,779,444.97
  5. Step 5: Solve for x
    x = 1,779,444.97/1,467.80
  6. Step 6: Final answer
    x = 1,212.32

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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.