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Finding the Fourth Proportional to 1,859.63, 2,788.08 and 886.41

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Solution

The fourth proportional to 1,859.63, 2,788.08 and 886.41 is: 1,328.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,859.63 : 2,788.08 = 886.41 : x
  2. Step 2: Convert to fraction form
    1,859.63/2,788.08 = 886.41/x
  3. Step 3: Cross multiply
    1,859.63x = 2,788.08 × 886.41
  4. Step 4: Simplify right side
    1,859.63x = 2,471,389.12
  5. Step 5: Solve for x
    x = 2,471,389.12/1,859.63
  6. Step 6: Final answer
    x = 1,328.97

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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.