Home / 1,861.81-2,788.46-888.59

Finding the Fourth Proportional to 1,861.81, 2,788.46 and 888.59

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Solution

The fourth proportional to 1,861.81, 2,788.46 and 888.59 is: 1,330.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.81 : 2,788.46 = 888.59 : x
  2. Step 2: Convert to fraction form
    1,861.81/2,788.46 = 888.59/x
  3. Step 3: Cross multiply
    1,861.81x = 2,788.46 × 888.59
  4. Step 4: Simplify right side
    1,861.81x = 2,477,800.20
  5. Step 5: Solve for x
    x = 2,477,800.20/1,861.81
  6. Step 6: Final answer
    x = 1,330.86

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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.