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Finding the Fourth Proportional to 3,365.90, 5,045.74 and 1,807

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Solution

The fourth proportional to 3,365.90, 5,045.74 and 1,807 is: 2,708.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,365.90 : 5,045.74 = 1,807 : x
  2. Step 2: Convert to fraction form
    3,365.90/5,045.74 = 1,807/x
  3. Step 3: Cross multiply
    3,365.90x = 5,045.74 × 1,807
  4. Step 4: Simplify right side
    3,365.90x = 9,117,652.18
  5. Step 5: Solve for x
    x = 9,117,652.18/3,365.90
  6. Step 6: Final answer
    x = 2,708.83

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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.