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Finding the Fourth Proportional to 1,807.50, 2,479.35 and 1,791.90

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Solution

The fourth proportional to 1,807.50, 2,479.35 and 1,791.90 is: 2,457.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.50 : 2,479.35 = 1,791.90 : x
  2. Step 2: Convert to fraction form
    1,807.50/2,479.35 = 1,791.90/x
  3. Step 3: Cross multiply
    1,807.50x = 2,479.35 × 1,791.90
  4. Step 4: Simplify right side
    1,807.50x = 4,442,747.27
  5. Step 5: Solve for x
    x = 4,442,747.27/1,807.50
  6. Step 6: Final answer
    x = 2,457.95

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.