Home / 3,161.68-4,743.43-1,312.45

Finding the Fourth Proportional to 3,161.68, 4,743.43 and 1,312.45

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Solution

The fourth proportional to 3,161.68, 4,743.43 and 1,312.45 is: 1,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.68 : 4,743.43 = 1,312.45 : x
  2. Step 2: Convert to fraction form
    3,161.68/4,743.43 = 1,312.45/x
  3. Step 3: Cross multiply
    3,161.68x = 4,743.43 × 1,312.45
  4. Step 4: Simplify right side
    3,161.68x = 6,225,499.56
  5. Step 5: Solve for x
    x = 6,225,499.56/3,161.68
  6. Step 6: Final answer
    x = 1,969.05

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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.