Home / 1,867.68-2,779.56-1,861.92

Finding the Fourth Proportional to 1,867.68, 2,779.56 and 1,861.92

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Solution

The fourth proportional to 1,867.68, 2,779.56 and 1,861.92 is: 2,770.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.68 : 2,779.56 = 1,861.92 : x
  2. Step 2: Convert to fraction form
    1,867.68/2,779.56 = 1,861.92/x
  3. Step 3: Cross multiply
    1,867.68x = 2,779.56 × 1,861.92
  4. Step 4: Simplify right side
    1,867.68x = 5,175,318.36
  5. Step 5: Solve for x
    x = 5,175,318.36/1,867.68
  6. Step 6: Final answer
    x = 2,770.99

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.