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Finding the Fourth Proportional to 1,788.32, 2,683.02 and 1,478.76

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Solution

The fourth proportional to 1,788.32, 2,683.02 and 1,478.76 is: 2,218.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.32 : 2,683.02 = 1,478.76 : x
  2. Step 2: Convert to fraction form
    1,788.32/2,683.02 = 1,478.76/x
  3. Step 3: Cross multiply
    1,788.32x = 2,683.02 × 1,478.76
  4. Step 4: Simplify right side
    1,788.32x = 3,967,542.66
  5. Step 5: Solve for x
    x = 3,967,542.66/1,788.32
  6. Step 6: Final answer
    x = 2,218.59

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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.