Home / 3,161.31-4,742.55-1,312.58

Finding the Fourth Proportional to 3,161.31, 4,742.55 and 1,312.58

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Solution

The fourth proportional to 3,161.31, 4,742.55 and 1,312.58 is: 1,969.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.31 : 4,742.55 = 1,312.58 : x
  2. Step 2: Convert to fraction form
    3,161.31/4,742.55 = 1,312.58/x
  3. Step 3: Cross multiply
    3,161.31x = 4,742.55 × 1,312.58
  4. Step 4: Simplify right side
    3,161.31x = 6,224,952.57
  5. Step 5: Solve for x
    x = 6,224,952.57/3,161.31
  6. Step 6: Final answer
    x = 1,969.11

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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.