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Finding the Fourth Proportional to 1,886.48, 2,604.10 and 1,223.88

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Solution

The fourth proportional to 1,886.48, 2,604.10 and 1,223.88 is: 1,689.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886.48 : 2,604.10 = 1,223.88 : x
  2. Step 2: Convert to fraction form
    1,886.48/2,604.10 = 1,223.88/x
  3. Step 3: Cross multiply
    1,886.48x = 2,604.10 × 1,223.88
  4. Step 4: Simplify right side
    1,886.48x = 3,187,105.91
  5. Step 5: Solve for x
    x = 3,187,105.91/1,886.48
  6. Step 6: Final answer
    x = 1,689.45

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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.