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Finding the Fourth Proportional to 3,437.72, 4,744 and 1,865.80

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Solution

The fourth proportional to 3,437.72, 4,744 and 1,865.80 is: 2,574.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,437.72 : 4,744 = 1,865.80 : x
  2. Step 2: Convert to fraction form
    3,437.72/4,744 = 1,865.80/x
  3. Step 3: Cross multiply
    3,437.72x = 4,744 × 1,865.80
  4. Step 4: Simplify right side
    3,437.72x = 8,851,355.20
  5. Step 5: Solve for x
    x = 8,851,355.20/3,437.72
  6. Step 6: Final answer
    x = 2,574.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.