Home / 3,731.21-5,148.02-2,405.69

Finding the Fourth Proportional to 3,731.21, 5,148.02 and 2,405.69

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Solution

The fourth proportional to 3,731.21, 5,148.02 and 2,405.69 is: 3,319.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,731.21 : 5,148.02 = 2,405.69 : x
  2. Step 2: Convert to fraction form
    3,731.21/5,148.02 = 2,405.69/x
  3. Step 3: Cross multiply
    3,731.21x = 5,148.02 × 2,405.69
  4. Step 4: Simplify right side
    3,731.21x = 12,384,539.81
  5. Step 5: Solve for x
    x = 12,384,539.81/3,731.21
  6. Step 6: Final answer
    x = 3,319.18

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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.