Home / 2,315.81-3,195.83-1,267.88

Finding the Fourth Proportional to 2,315.81, 3,195.83 and 1,267.88

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Solution

The fourth proportional to 2,315.81, 3,195.83 and 1,267.88 is: 1,749.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.81 : 3,195.83 = 1,267.88 : x
  2. Step 2: Convert to fraction form
    2,315.81/3,195.83 = 1,267.88/x
  3. Step 3: Cross multiply
    2,315.81x = 3,195.83 × 1,267.88
  4. Step 4: Simplify right side
    2,315.81x = 4,051,916.13
  5. Step 5: Solve for x
    x = 4,051,916.13/2,315.81
  6. Step 6: Final answer
    x = 1,749.67

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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.