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Finding the Fourth Proportional to 1,548.76, 2,324.10 and 1,389.40

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Solution

The fourth proportional to 1,548.76, 2,324.10 and 1,389.40 is: 2,084.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.76 : 2,324.10 = 1,389.40 : x
  2. Step 2: Convert to fraction form
    1,548.76/2,324.10 = 1,389.40/x
  3. Step 3: Cross multiply
    1,548.76x = 2,324.10 × 1,389.40
  4. Step 4: Simplify right side
    1,548.76x = 3,229,104.54
  5. Step 5: Solve for x
    x = 3,229,104.54/1,548.76
  6. Step 6: Final answer
    x = 2,084.96

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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.