Home / 3,151.41-4,727.87-1,420.03

Finding the Fourth Proportional to 3,151.41, 4,727.87 and 1,420.03

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Solution

The fourth proportional to 3,151.41, 4,727.87 and 1,420.03 is: 2,130.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.41 : 4,727.87 = 1,420.03 : x
  2. Step 2: Convert to fraction form
    3,151.41/4,727.87 = 1,420.03/x
  3. Step 3: Cross multiply
    3,151.41x = 4,727.87 × 1,420.03
  4. Step 4: Simplify right side
    3,151.41x = 6,713,721.37
  5. Step 5: Solve for x
    x = 6,713,721.37/3,151.41
  6. Step 6: Final answer
    x = 2,130.39

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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.