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Finding the Fourth Proportional to 2,455.40, 3,674.10 and 1,807.40

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Solution

The fourth proportional to 2,455.40, 3,674.10 and 1,807.40 is: 2,704.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.40 : 3,674.10 = 1,807.40 : x
  2. Step 2: Convert to fraction form
    2,455.40/3,674.10 = 1,807.40/x
  3. Step 3: Cross multiply
    2,455.40x = 3,674.10 × 1,807.40
  4. Step 4: Simplify right side
    2,455.40x = 6,640,568.34
  5. Step 5: Solve for x
    x = 6,640,568.34/2,455.40
  6. Step 6: Final answer
    x = 2,704.48

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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.