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Finding the Fourth Proportional to 2,703.40, 4,055.10 and 1,245.40

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Solution

The fourth proportional to 2,703.40, 4,055.10 and 1,245.40 is: 1,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,703.40 : 4,055.10 = 1,245.40 : x
  2. Step 2: Convert to fraction form
    2,703.40/4,055.10 = 1,245.40/x
  3. Step 3: Cross multiply
    2,703.40x = 4,055.10 × 1,245.40
  4. Step 4: Simplify right side
    2,703.40x = 5,050,221.54
  5. Step 5: Solve for x
    x = 5,050,221.54/2,703.40
  6. Step 6: Final answer
    x = 1,868.10

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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.