Home / 3,411.02-5,120.62-2,312.05

Finding the Fourth Proportional to 3,411.02, 5,120.62 and 2,312.05

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Solution

The fourth proportional to 3,411.02, 5,120.62 and 2,312.05 is: 3,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.02 : 5,120.62 = 2,312.05 : x
  2. Step 2: Convert to fraction form
    3,411.02/5,120.62 = 2,312.05/x
  3. Step 3: Cross multiply
    3,411.02x = 5,120.62 × 2,312.05
  4. Step 4: Simplify right side
    3,411.02x = 11,839,129.47
  5. Step 5: Solve for x
    x = 11,839,129.47/3,411.02
  6. Step 6: Final answer
    x = 3,470.85

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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.