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Finding the Third Proportional to 1,555.88 and 2,409.05

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Solution

The third proportional to 1,555.88 and 2,409.05 is: 3,730.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.88 : 2,409.05 = 2,409.05 : x
  2. Step 2: Convert to fraction form
    1,555.88/2,409.05 = 2,409.05/x
  3. Step 3: Cross multiply
    1,555.88x = 2,409.05 × 2,409.05
  4. Step 4: Simplify right side
    1,555.88x = 5,803,506.85
  5. Step 5: Solve for x
    x = 5,803,506.85/1,555.88
  6. Step 6: Final answer
    x = 3,730.06

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.