Home / 3,761.10-5,637.87-1,420.74

Finding the Fourth Proportional to 3,761.10, 5,637.87 and 1,420.74

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Solution

The fourth proportional to 3,761.10, 5,637.87 and 1,420.74 is: 2,129.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.10 : 5,637.87 = 1,420.74 : x
  2. Step 2: Convert to fraction form
    3,761.10/5,637.87 = 1,420.74/x
  3. Step 3: Cross multiply
    3,761.10x = 5,637.87 × 1,420.74
  4. Step 4: Simplify right side
    3,761.10x = 8,009,947.42
  5. Step 5: Solve for x
    x = 8,009,947.42/3,761.10
  6. Step 6: Final answer
    x = 2,129.68

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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.